118755990 has 64 divisors (see below), whose sum is σ = 317649600. Its totient is φ = 31571712.

The previous prime is 118755979. The next prime is 118755991. The reversal of 118755990 is 99557811.

118755990 is a `hidden beast` number, since 1 + 1 + 8 + 7 + 559 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118755991) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 153244 + ... + 154016.

It is an arithmetic number, because the mean of its divisors is an integer number (4963275).

Almost surely, 2^118755990 is an apocalyptic number.

118755990 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 118755990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158824800).

118755990 is an abundant number, since it is smaller than the sum of its proper divisors (198893610).

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

118755990 is a wasteful number, since it uses less digits than its factorization.

118755990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 45.

The square root of 118755990 is about 10897.5221954351. The cubic root of 118755990 is about 491.5320506050.

The spelling of 118755990 in words is "one hundred eighteen million, seven hundred fifty-five thousand, nine hundred ninety".