18522958985 has 16 divisors (see below), whose sum is σ = 22273902720. Its totient is φ = 14787505920.

The previous prime is 18522958973. The next prime is 18522959011. The reversal of 18522958985 is 58985922581.

It is not a de Polignac number, because 18522958985 - 2¹⁰ = 18522957961 is a prime.

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, 7317170 + ... + 7319700.

It is an arithmetic number, because the mean of its divisors is an integer number (1392118920).

Almost surely, 2^18522958985 is an apocalyptic number.

It is an amenable number.

18522958985 is a deficient number, since it is larger than the sum of its proper divisors (3750943735).

18522958985 is a wasteful number, since it uses less digits than its factorization.

18522958985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008.

The product of its digits is 20736000, while the sum is 62.

The spelling of 18522958985 in words is "eighteen billion, five hundred twenty-two million, nine hundred fifty-eight thousand, nine hundred eighty-five".