118900638 has 48 divisors (see below), whose sum is σ = 267649200. Its totient is φ = 38102400.

The previous prime is 118900631. The next prime is 118900657. The reversal of 118900638 is 836009811.

118900638 is a `hidden beast` number, since 1 + 18 + 9 + 0 + 0 + 638 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118900631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197538 + ... + 198138.

It is an arithmetic number, because the mean of its divisors is an integer number (5576025).

Almost surely, 2^118900638 is an apocalyptic number.

118900638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 118900638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133824600).

118900638 is an abundant number, since it is smaller than the sum of its proper divisors (148748562).

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

118900638 is a wasteful number, since it uses less digits than its factorization.

118900638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 118900638 is about 10904.1569137646. The cubic root of 118900638 is about 491.7315360673.

The spelling of 118900638 in words is "one hundred eighteen million, nine hundred thousand, six hundred thirty-eight".