118409189185 has 64 divisors (see below), whose sum is σ = 169585228800. Its totient is φ = 79306805760.

The previous prime is 118409189179. The next prime is 118409189231. The reversal of 118409189185 is 581981904811.

It is not a de Polignac number, because 118409189185 - 2¹³ = 118409180993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21175740 + ... + 21181330.

It is an arithmetic number, because the mean of its divisors is an integer number (2649769200).

Almost surely, 2^118409189185 is an apocalyptic number.

It is an amenable number.

118409189185 is a deficient number, since it is larger than the sum of its proper divisors (51176039615).

118409189185 is an equidigital number, since it uses as much as digits as its factorization.

118409189185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903 (or 5889 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 55.

The spelling of 118409189185 in words is "one hundred eighteen billion, four hundred nine million, one hundred eighty-nine thousand, one hundred eighty-five".