16004912931 has 32 divisors (see below), whose sum is σ = 27104256000. Its totient is φ = 9143642880.

The previous prime is 16004912923. The next prime is 16004912981. The reversal of 16004912931 is 13921940061.

It is a happy number.

16004912931 is a `hidden beast` number, since 1 + 600 + 4 + 9 + 12 + 9 + 31 = 666.

It is not a de Polignac number, because 16004912931 - 2³ = 16004912923 is a prime.

It is a super-2 number, since 2×16004912931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16004912981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1440126 + ... + 1451196.

It is an arithmetic number, because the mean of its divisors is an integer number (847008000).

Almost surely, 2^16004912931 is an apocalyptic number.

16004912931 is a deficient number, since it is larger than the sum of its proper divisors (11099343069).

16004912931 is a wasteful number, since it uses less digits than its factorization.

16004912931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18736 (or 18730 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 16004912931 in words is "sixteen billion, four million, nine hundred twelve thousand, nine hundred thirty-one".