38915963 has 2 divisors, whose sum is σ = 38915964. Its totient is φ = 38915962.

The previous prime is 38915917. The next prime is 38915993. The reversal of 38915963 is 36951983.

It is a strong prime.

It is an emirp because it is prime and its reverse (36951983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38915963 - 2⁸ = 38915707 is a prime.

It is not a weakly prime, because it can be changed into another prime (38915993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19457981 + 19457982.

It is an arithmetic number, because the mean of its divisors is an integer number (19457982).

Almost surely, 2^38915963 is an apocalyptic number.

38915963 is a deficient number, since it is larger than the sum of its proper divisors (1).

38915963 is an equidigital number, since it uses as much as digits as its factorization.

38915963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 44.

The square root of 38915963 is about 6238.2660251067. The cubic root of 38915963 is about 338.8773903033.

The spelling of 38915963 in words is "thirty-eight million, nine hundred fifteen thousand, nine hundred sixty-three".