18757493764 has 45 divisors (see below), whose sum is σ = 34656024711. Its totient is φ = 8883095880.

The previous prime is 18757493759. The next prime is 18757493819. The reversal of 18757493764 is 46739475781.

The square root of 18757493764 is 136958.

It is a perfect power (a square), and thus also a powerful number.

Its product of digits (35562240) is a multiple of the sum of its prime divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 399095589 + ... + 399095635.

Almost surely, 2^18757493764 is an apocalyptic number.

18757493764 is the 136958-th square number.

It is an amenable number.

18757493764 is a deficient number, since it is larger than the sum of its proper divisors (15898530947).

18757493764 is an frugal number, since it uses more digits than its factorization.

18757493764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 80 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 61.

The spelling of 18757493764 in words is "eighteen billion, seven hundred fifty-seven million, four hundred ninety-three thousand, seven hundred sixty-four".