118631900 has 36 divisors (see below), whose sum is σ = 260551032. Its totient is φ = 46877760.

The previous prime is 118631881. The next prime is 118631911. The reversal of 118631900 is 9136811.

It is a happy number.

It is a super-2 number, since 2×118631900² = 28147055395220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1154 + ... + 15446.

Almost surely, 2^118631900 is an apocalyptic number.

118631900 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 118631900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130275516).

118631900 is an abundant number, since it is smaller than the sum of its proper divisors (141919132).

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

118631900 is a wasteful number, since it uses less digits than its factorization.

118631900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14390 (or 14383 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 118631900 is about 10891.8272112626. The cubic root of 118631900 is about 491.3607877516.

The spelling of 118631900 in words is "one hundred eighteen million, six hundred thirty-one thousand, nine hundred".