118137930 has 32 divisors (see below), whose sum is σ = 300210624. Its totient is φ = 29650176.

The previous prime is 118137917. The next prime is 118137937. The reversal of 118137930 is 39731811.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 118137891 and 118137900.

It is not an unprimeable number, because it can be changed into a prime (118137937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115312 + ... + 116331.

It is an arithmetic number, because the mean of its divisors is an integer number (9381582).

Almost surely, 2^118137930 is an apocalyptic number.

118137930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118137930 is an abundant number, since it is smaller than the sum of its proper divisors (182072694).

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

118137930 is a wasteful number, since it uses less digits than its factorization.

118137930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231670.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 118137930 is about 10869.1273798774. The cubic root of 118137930 is about 490.6778484730.

The spelling of 118137930 in words is "one hundred eighteen million, one hundred thirty-seven thousand, nine hundred thirty".