118611813 has 32 divisors (see below), whose sum is σ = 170726400. Its totient is φ = 73028736.

The previous prime is 118611791. The next prime is 118611821. The reversal of 118611813 is 318116811.

It is not a de Polignac number, because 118611813 - 2⁵ = 118611781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118611863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 522406 + ... + 522632.

It is an arithmetic number, because the mean of its divisors is an integer number (5335200).

Almost surely, 2^118611813 is an apocalyptic number.

It is an amenable number.

118611813 is a deficient number, since it is larger than the sum of its proper divisors (52114587).

118611813 is a wasteful number, since it uses less digits than its factorization.

118611813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441.

The product of its digits is 1152, while the sum is 30.

The square root of 118611813 is about 10890.9050588094. The cubic root of 118611813 is about 491.3330534428. Note that the first 3 decimals are identical.

The spelling of 118611813 in words is "one hundred eighteen million, six hundred eleven thousand, eight hundred thirteen".