18458939875 has 8 divisors (see below), whose sum is σ = 23036757120. Its totient is φ = 14767151800.

The previous prime is 18458939857. The next prime is 18458939897. The reversal of 18458939875 is 57893985481.

It is not a de Polignac number, because 18458939875 - 2²⁵ = 18425385443 is a prime.

It is a super-2 number, since 2×18458939875² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18458939875.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73835635 + ... + 73835884.

It is an arithmetic number, because the mean of its divisors is an integer number (2879594640).

Almost surely, 2^18458939875 is an apocalyptic number.

18458939875 is a deficient number, since it is larger than the sum of its proper divisors (4577817245).

18458939875 is an equidigital number, since it uses as much as digits as its factorization.

18458939875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147671534 (or 147671524 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 67.

The spelling of 18458939875 in words is "eighteen billion, four hundred fifty-eight million, nine hundred thirty-nine thousand, eight hundred seventy-five".