118513830 has 64 divisors (see below), whose sum is σ = 305130240. Its totient is φ = 29367936.

The previous prime is 118513799. The next prime is 118513841. The reversal of 118513830 is 38315811.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 28249 + ... + 32171.

It is an arithmetic number, because the mean of its divisors is an integer number (4767660).

Almost surely, 2^118513830 is an apocalyptic number.

118513830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 118513830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152565120).

118513830 is an abundant number, since it is smaller than the sum of its proper divisors (186616410).

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

118513830 is a wasteful number, since it uses less digits than its factorization.

118513830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 118513830 is about 10886.4057429438. The cubic root of 118513830 is about 491.1977224896.

The spelling of 118513830 in words is "one hundred eighteen million, five hundred thirteen thousand, eight hundred thirty".