It's about 1,000,000 times as heavy as a Human Brain.
In other words, 1,590,000 kilograms is 1,180,000 times the weight of a Human Brain, and the weight of a Human Brain is 0.000000847 times that amount.(adult)
The average weight of an adult human brain is between 1.35 kilograms. In humans and primates, sight and vision utilize about 30 different parts of the brain which together account for about half of the brain's size.
It's about 1,500,000 times as heavy as a liter of Water.
In other words, 1,590,000 kilograms is 1,589,955 times the weight of a liter of Water, and the weight of a liter of Water is 0.0000006289486 times that amount.(fresh; 4° C / 39.2° F; maximum density)
Contrary to popular belief, 1 liter (0.0.264172052358148 gal) of water at 4° C / 39.2° F (its point of maximum density) weighs 1.000028 kg rather than 1 kg exactly. The total volume of water on the planet Earth is about 13,590,000,000,000,000,000 (13.59 quntillion) L (3,590,000,000,000,000,000 gallons).
It's about 2,500,000 times as heavy as a Basketball.
In other words, 1,590,000 kilograms is 2,549,345.4318 times the weight of a Basketball, and the weight of a Basketball is 0.00000039225755267 times that amount.(NBA official ball standards, Size 7)
A regulation NBA basketball, manufactured by Spalding, is known as a Size 7 ball and weighs 0.62368950875 kilograms. These balls have 4,118 pebbles each with a diameter of 2.5 mm
It's about 3,500,000 times as heavy as a Football (Soccer).
In other words, the weight of a Football (Soccer) is 0.00000027 times 1,590,000 kilograms.(a.k.a. Soccer, a.k.a. Association Football) (FIFA Law 2 specification)
According to FIFA's Law of the Game number 2, a football must weigh between 0.41 kilograms and 0.45 kilograms. An artifact on display at the Smith Art Gallery in Museum in Stirling, Scotland is said to be the world's oldest football and is about one-third to one-half the size of a modern football.
It's about 4,000,000 times as heavy as a Football (American).
In other words, 1,590,000 kilograms is 3,867,972.379299 times the weight of a Football (American), and the weight of a Football (American) is 0.000000258533386989 times that amount.(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 0.39689332375 kilograms and 0.425242846875 kilograms. Because of NFL regulations, ceremonial considerations, and backup requirements, each NFL Superbowl requires the manufacture of 144 balls exclusively for the event.
It's about 4,500,000 times as heavy as a Can of Soup.
In other words, the weight of a Can of Soup is 0.00000022 times 1,590,000 kilograms.(for Campbell''s Condensed Tomato Soup, 317.9 ml)
A can of Campbell''s Tomato Soup weighs 0.35 kilograms. Cans have been used to store soup and other foods since their invention in 1913, but a dedicated can opener was not developed until cans began to use thinner materials — prior to that time, cans were usually opened using various blunt instruments and tools.
It's about 5,000,000 times as heavy as a Human Heart.