18750728924 has 12 divisors (see below), whose sum is σ = 33114820200. Its totient is φ = 9289351728.

The previous prime is 18750728923. The next prime is 18750728977. The reversal of 18750728924 is 42982705781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18750728923) 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, 21502694 + ... + 21503565.

It is an arithmetic number, because the mean of its divisors is an integer number (2759568350).

Almost surely, 2^18750728924 is an apocalyptic number.

It is an amenable number.

18750728924 is a deficient number, since it is larger than the sum of its proper divisors (14364091276).

18750728924 is a wasteful number, since it uses less digits than its factorization.

18750728924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43006372 (or 43006370 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 18750728924 in words is "eighteen billion, seven hundred fifty million, seven hundred twenty-eight thousand, nine hundred twenty-four".