18463917924 has 45 divisors (see below), whose sum is σ = 48274723497. Its totient is φ = 6153824016.

The previous prime is 18463917911. The next prime is 18463917949. The reversal of 18463917924 is 42971936481.

The square root of 18463917924 is 135882.

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

18463917924 is a `hidden beast` number, since 1 + 8 + 463 + 9 + 179 + 2 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15430111524 + 3033806400 = 124218^2 + 55080^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

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 14 ways as a sum of consecutive naturals, for example, 2442102 + ... + 2449650.

Almost surely, 2^18463917924 is an apocalyptic number.

18463917924 is the 135882-nd square number.

It is an amenable number.

18463917924 is an abundant number, since it is smaller than the sum of its proper divisors (29810805573).

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

18463917924 is an frugal number, since it uses more digits than its factorization.

18463917924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15114 (or 7554 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 18463917924 in words is "eighteen billion, four hundred sixty-three million, nine hundred seventeen thousand, nine hundred twenty-four".