Q: Is 1,644 a Prime Number?
A: No, 1,644 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1644 can be evenly divided by 1 2 3 4 6 12 137 274 411 548 822 and 1,644, with no remainder.
Since 1,644 cannot be divided by just 1 and 1,644, it is not a prime number.