18573338688 has 28 divisors (see below), whose sum is σ = 49141959120. Its totient is φ = 6191112832.

The previous prime is 18573338671. The next prime is 18573338689. The reversal of 18573338688 is 88683337581.

It is a super-2 number, since 2×18573338688² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18573338689) 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, 48367878 + ... + 48368261.

Almost surely, 2^18573338688 is an apocalyptic number.

It is an amenable number.

18573338688 is an abundant number, since it is smaller than the sum of its proper divisors (30568620432).

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

18573338688 is an equidigital number, since it uses as much as digits as its factorization.

18573338688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96736154 (or 96736144 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 60.

The spelling of 18573338688 in words is "eighteen billion, five hundred seventy-three million, three hundred thirty-eight thousand, six hundred eighty-eight".