18740944464 has 40 divisors (see below), whose sum is σ = 52815390432. Its totient is φ = 5679073920.

The previous prime is 18740944457. The next prime is 18740944489. The reversal of 18740944464 is 46444904781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17746579 + ... + 17747634.

Almost surely, 2^18740944464 is an apocalyptic number.

It is an amenable number.

18740944464 is an abundant number, since it is smaller than the sum of its proper divisors (34074445968).

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

18740944464 is a wasteful number, since it uses less digits than its factorization.

18740944464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35494235 (or 35494229 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 18740944464 in words is "eighteen billion, seven hundred forty million, nine hundred forty-four thousand, four hundred sixty-four".