118168640 has 56 divisors (see below), whose sum is σ = 283098240. Its totient is φ = 46980608.

The previous prime is 118168613. The next prime is 118168663. The reversal of 118168640 is 46861811.

It is a happy number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 118168640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56249 + ... + 58311.

Almost surely, 2^118168640 is an apocalyptic number.

118168640 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 118168640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141549120).

118168640 is an abundant number, since it is smaller than the sum of its proper divisors (164929600).

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

118168640 is a wasteful number, since it uses less digits than its factorization.

118168640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259 (or 2249 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 118168640 is about 10870.5400049860. The cubic root of 118168640 is about 490.7203620874.

The spelling of 118168640 in words is "one hundred eighteen million, one hundred sixty-eight thousand, six hundred forty".