118188864 has 84 divisors (see below), whose sum is σ = 349747840. Its totient is φ = 38119680.

The previous prime is 118188857. The next prime is 118188869. The reversal of 118188864 is 468881811.

It is a super-2 number, since 2×118188864² = 27937215147220992, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118188869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14547 + ... + 21165.

Almost surely, 2^118188864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118188864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174873920).

118188864 is an abundant number, since it is smaller than the sum of its proper divisors (231558976).

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

118188864 is a wasteful number, since it uses less digits than its factorization.

118188864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6668 (or 6655 counting only the distinct ones).

The product of its digits is 98304, while the sum is 45.

The square root of 118188864 is about 10871.4701857660. The cubic root of 118188864 is about 490.7483553082.

The spelling of 118188864 in words is "one hundred eighteen million, one hundred eighty-eight thousand, eight hundred sixty-four".