118158 has 16 divisors (see below), whose sum is σ = 241920. Its totient is φ = 38456.

The previous prime is 118147. The next prime is 118163. The reversal of 118158 is 851811.

It is a super-2 number, since 2×118158² = 27922625928, which contains 22 as substring.

It is a congruent number.

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, 73 + ... + 491.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2¹¹⁸¹⁵⁸ is an apocalyptic number.

118158 is an abundant number, since it is smaller than the sum of its proper divisors (123762).

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

118158 is a wasteful number, since it uses less digits than its factorization.

118158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its digits is 320, while the sum is 24.

The square root of 118158 is about 343.7411817051. The cubic root of 118158 is about 49.0705633359.

Adding to 118158 its reverse (851811), we get a palindrome (969969).

It can be divided in two parts, 118 and 158, that added together give a triangular number (276 = T₂₃).

The spelling of 118158 in words is "one hundred eighteen thousand, one hundred fifty-eight".