118156900 has 27 divisors (see below), whose sum is σ = 256636569. Its totient is φ = 47219280.

The previous prime is 118156889. The next prime is 118156931. The reversal of 118156900 is 9651811.

The square root of 118156900 is 10870.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 42536484 + 75620416 = 6522^2 + 8696^2 .

It is a super-2 number, since 2×118156900² = 27922106035220000, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 108157 + ... + 109243.

Almost surely, 2^118156900 is an apocalyptic number.

118156900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118156900 is the 10870-th square number.

It is an amenable number.

118156900 is an abundant number, since it is smaller than the sum of its proper divisors (138479669).

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

118156900 is an equidigital number, since it uses as much as digits as its factorization.

118156900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 31.

The cubic root of 118156900 is about 490.7041106018.

It can be divided in two parts, 1181 and 56900, that added together give a square (58081 = 241²).

The spelling of 118156900 in words is "one hundred eighteen million, one hundred fifty-six thousand, nine hundred".