Q: Is 1,388,538 a Prime Number?
A: No, 1,388,538 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 1388538 can be evenly divided by 1 2 3 6 9 18 77,141 154,282 231,423 462,846 694,269 and 1,388,538, with no remainder.
Since 1,388,538 cannot be divided by just 1 and 1,388,538, it is not a prime number.