18858874572 has 60 divisors (see below), whose sum is σ = 49631828400. Its totient is φ = 6244085664.

The previous prime is 18858874561. The next prime is 18858874577. The reversal of 18858874572 is 27547885881.

18858874572 is a `hidden beast` number, since 1 + 8 + 8 + 58 + 8 + 7 + 4 + 572 = 666.

It is not an unprimeable number, because it can be changed into a prime (18858874577) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 147048 + ... + 243599.

It is an arithmetic number, because the mean of its divisors is an integer number (827197140).

Almost surely, 2^18858874572 is an apocalyptic number.

18858874572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18858874572 is an abundant number, since it is smaller than the sum of its proper divisors (30772953828).

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

18858874572 is a wasteful number, since it uses less digits than its factorization.

18858874572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390812 (or 390801 counting only the distinct ones).

The product of its digits is 40140800, while the sum is 63.

The spelling of 18858874572 in words is "eighteen billion, eight hundred fifty-eight million, eight hundred seventy-four thousand, five hundred seventy-two".