18801345924 has 27 divisors (see below), whose sum is σ = 47527704133. Its totient is φ = 6266841072.

The previous prime is 18801345911. The next prime is 18801345943. The reversal of 18801345924 is 42954310881.

The square root of 18801345924 is 137118.

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

18801345924 is a `hidden beast` number, since 188 + 0 + 13 + 459 + 2 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3184344900 + 15617001024 = 56430^2 + 124968^2 .

It is a super-2 number, since 2×18801345924² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18801345924.

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 8 ways as a sum of consecutive naturals, for example, 811282 + ... + 834134.

Almost surely, 2^18801345924 is an apocalyptic number.

18801345924 is the 137118-th square number.

It is an amenable number.

18801345924 is an abundant number, since it is smaller than the sum of its proper divisors (28726358209).

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

18801345924 is an frugal number, since it uses more digits than its factorization.

18801345924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45716 (or 22858 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 18801345924 in words is "eighteen billion, eight hundred one million, three hundred forty-five thousand, nine hundred twenty-four".