Q: Is 387,638 a Prime Number?
A: No, 387,638 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 387638 can be evenly divided by 1 2 19 38 101 202 1,919 3,838 10,201 20,402 193,819 and 387,638, with no remainder.
Since 387,638 cannot be divided by just 1 and 387,638, it is not a prime number.