118188 has 54 divisors (see below), whose sum is σ = 352716. Its totient is φ = 33264.

The previous prime is 118171. The next prime is 118189. The reversal of 118188 is 881811.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (118189) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1731 + ... + 1797.

2¹¹⁸¹⁸⁸ is an apocalyptic number.

118188 is a gapful number since it is divisible by the number (18) 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 118188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176358).

118188 is an abundant number, since it is smaller than the sum of its proper divisors (234528).

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

118188 is a wasteful number, since it uses less digits than its factorization.

118188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 79 counting only the distinct ones).

The product of its digits is 512, while the sum is 27.

The square root of 118188 is about 343.7848164186. The cubic root of 118188 is about 49.0747159461.

Adding to 118188 its reverse (881811), we get a palindrome (999999).

The spelling of 118188 in words is "one hundred eighteen thousand, one hundred eighty-eight".