18861452524 has 12 divisors (see below), whose sum is σ = 33566992200. Its totient is φ = 9270883328.

The previous prime is 18861452521. The next prime is 18861452557. The reversal of 18861452524 is 42525416881.

It is not an unprimeable number, because it can be changed into a prime (18861452521) 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, 39960469 + ... + 39960940.

It is an arithmetic number, because the mean of its divisors is an integer number (2797249350).

Almost surely, 2^18861452524 is an apocalyptic number.

It is an amenable number.

18861452524 is a deficient number, since it is larger than the sum of its proper divisors (14705539676).

18861452524 is a wasteful number, since it uses less digits than its factorization.

18861452524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79921472 (or 79921470 counting only the distinct ones).

The product of its digits is 614400, while the sum is 46.

The spelling of 18861452524 in words is "eighteen billion, eight hundred sixty-one million, four hundred fifty-two thousand, five hundred twenty-four".