118981538250 has 64 divisors (see below), whose sum is σ = 305004420864. Its totient is φ = 30870878400.

The previous prime is 118981538243. The next prime is 118981538261. The reversal of 118981538250 is 52835189811.

It is a junction number, because it is equal to n+sod(n) for n = 118981538193 and 118981538202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2116062 + ... + 2171561.

It is an arithmetic number, because the mean of its divisors is an integer number (4765694076).

Almost surely, 2^118981538250 is an apocalyptic number.

118981538250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118981538250 is an abundant number, since it is smaller than the sum of its proper divisors (186022882614).

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

118981538250 is a wasteful number, since it uses less digits than its factorization.

118981538250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287680 (or 4287670 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 51.

It can be divided in two parts, 118981 and 538250, that added together give a triangular number (657231 = T₁₁₄₆).

The spelling of 118981538250 in words is "one hundred eighteen billion, nine hundred eighty-one million, five hundred thirty-eight thousand, two hundred fifty".