38656394831 has 2 divisors, whose sum is σ = 38656394832. Its totient is φ = 38656394830.

The previous prime is 38656394789. The next prime is 38656394863. The reversal of 38656394831 is 13849365683.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38656394831 is a prime.

It is a super-2 number, since 2×38656394831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38656394891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19328197415 + 19328197416.

It is an arithmetic number, because the mean of its divisors is an integer number (19328197416).

Almost surely, 2^38656394831 is an apocalyptic number.

38656394831 is a deficient number, since it is larger than the sum of its proper divisors (1).

38656394831 is an equidigital number, since it uses as much as digits as its factorization.

38656394831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 56.

The spelling of 38656394831 in words is "thirty-eight billion, six hundred fifty-six million, three hundred ninety-four thousand, eight hundred thirty-one".