It's a number.
It's an even number.
It's a Prime number.
Two squared equals 4.
The square root of 2 equals 1.414213523730950488 (it continues on and on, for it is an irrational number)
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Some interesting facts about the number nineteen are you get to move out of the house and you are old enough to drive.
1,2,4,7,8,16,28,56
72,1,2,3,8,9
9X10
it is a perfect square