118612291 has 12 divisors (see below), whose sum is σ = 142737120. Its totient is φ = 98160720.

The previous prime is 118612283. The next prime is 118612313. The reversal of 118612291 is 192216811.

It is a happy number.

It is not a de Polignac number, because 118612291 - 2³ = 118612283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118612261) 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, 40315 + ... + 43156.

It is an arithmetic number, because the mean of its divisors is an integer number (11894760).

Almost surely, 2^118612291 is an apocalyptic number.

118612291 is a deficient number, since it is larger than the sum of its proper divisors (24124829).

118612291 is an equidigital number, since it uses as much as digits as its factorization.

118612291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83514 (or 83507 counting only the distinct ones).

The product of its digits is 1728, while the sum is 31.

The square root of 118612291 is about 10890.9270037036. The cubic root of 118612291 is about 491.3337134582. Note that the first 3 decimals are identical.

The spelling of 118612291 in words is "one hundred eighteen million, six hundred twelve thousand, two hundred ninety-one".