16604486931 has 4 divisors (see below), whose sum is σ = 22139315912. Its totient is φ = 11069657952.

The previous prime is 16604486867. The next prime is 16604486953. The reversal of 16604486931 is 13968440661.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16604486931 - 2⁶ = 16604486867 is a prime.

It is a super-2 number, since 2×16604486931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16604486231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2767414486 + ... + 2767414491.

It is an arithmetic number, because the mean of its divisors is an integer number (5534828978).

Almost surely, 2^16604486931 is an apocalyptic number.

16604486931 is a deficient number, since it is larger than the sum of its proper divisors (5534828981).

16604486931 is an equidigital number, since it uses as much as digits as its factorization.

16604486931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534828980.

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 16604486931 in words is "sixteen billion, six hundred four million, four hundred eighty-six thousand, nine hundred thirty-one".