18758494072 has 16 divisors (see below), whose sum is σ = 36306763200. Its totient is φ = 9076690560.

The previous prime is 18758494039. The next prime is 18758494091. The reversal of 18758494072 is 27049485781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37819297 + ... + 37819792.

It is an arithmetic number, because the mean of its divisors is an integer number (2269172700).

Almost surely, 2^18758494072 is an apocalyptic number.

It is an amenable number.

18758494072 is a deficient number, since it is larger than the sum of its proper divisors (17548269128).

18758494072 is a wasteful number, since it uses less digits than its factorization.

18758494072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75639126 (or 75639122 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 18758494072 in words is "eighteen billion, seven hundred fifty-eight million, four hundred ninety-four thousand, seventy-two".