16385053931 has 2 divisors, whose sum is σ = 16385053932. Its totient is φ = 16385053930.

The previous prime is 16385053913. The next prime is 16385053967. The reversal of 16385053931 is 13935058361.

Together with previous prime (16385053913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16385053931 is a prime.

It is a super-2 number, since 2×16385053931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16385053991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8192526965 + 8192526966.

It is an arithmetic number, because the mean of its divisors is an integer number (8192526966).

Almost surely, 2^16385053931 is an apocalyptic number.

16385053931 is a deficient number, since it is larger than the sum of its proper divisors (1).

16385053931 is an equidigital number, since it uses as much as digits as its factorization.

16385053931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 16385053931 in words is "sixteen billion, three hundred eighty-five million, fifty-three thousand, nine hundred thirty-one".