118091013 has 16 divisors (see below), whose sum is σ = 162306816. Its totient is φ = 76317120.

The previous prime is 118091009. The next prime is 118091021. The reversal of 118091013 is 310190811.

It is not a de Polignac number, because 118091013 - 2² = 118091009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118091033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30708 + ... + 34338.

It is an arithmetic number, because the mean of its divisors is an integer number (10144176).

Almost surely, 2^118091013 is an apocalyptic number.

It is an amenable number.

118091013 is a deficient number, since it is larger than the sum of its proper divisors (44215803).

118091013 is a wasteful number, since it uses less digits than its factorization.

118091013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 118091013 is about 10866.9688966151. The cubic root of 118091013 is about 490.6128843506.

The spelling of 118091013 in words is "one hundred eighteen million, ninety-one thousand, thirteen".