18534857068 has 48 divisors (see below), whose sum is σ = 39952890880. Its totient is φ = 7326656064.

The previous prime is 18534857051. The next prime is 18534857083. The reversal of 18534857068 is 86075843581.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454753 + ... + 493831.

Almost surely, 2^18534857068 is an apocalyptic number.

It is an amenable number.

18534857068 is an abundant number, since it is smaller than the sum of its proper divisors (21418033812).

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

18534857068 is a wasteful number, since it uses less digits than its factorization.

18534857068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40406 (or 40404 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 18534857068 in words is "eighteen billion, five hundred thirty-four million, eight hundred fifty-seven thousand, sixty-eight".