18371883904 has 32 divisors (see below), whose sum is σ = 39927534840. Its totient is φ = 8350855680.

The previous prime is 18371883853. The next prime is 18371883913. The reversal of 18371883904 is 40938817381.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×18371883904² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6522699 + ... + 6525514.

Almost surely, 2^18371883904 is an apocalyptic number.

It is an amenable number.

18371883904 is an abundant number, since it is smaller than the sum of its proper divisors (21555650936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18371883904 is a wasteful number, since it uses less digits than its factorization.

18371883904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13048238 (or 13048226 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 18371883904 in words is "eighteen billion, three hundred seventy-one million, eight hundred eighty-three thousand, nine hundred four".