118170920 has 64 divisors (see below), whose sum is σ = 309640320. Its totient is φ = 39746304.

The previous prime is 118170919. The next prime is 118170931. The reversal of 118170920 is 29071811.

It is an unprimeable number.

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, 10859 + ... + 18821.

It is an arithmetic number, because the mean of its divisors is an integer number (4838130).

Almost surely, 2^118170920 is an apocalyptic number.

118170920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118170920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154820160).

118170920 is an abundant number, since it is smaller than the sum of its proper divisors (191469400).

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

118170920 is a wasteful number, since it uses less digits than its factorization.

118170920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8034 (or 8030 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 118170920 is about 10870.6448750753. The cubic root of 118170920 is about 490.7235181284.

The spelling of 118170920 in words is "one hundred eighteen million, one hundred seventy thousand, nine hundred twenty".