118545813 has 6 divisors (see below), whose sum is σ = 171232854. Its totient is φ = 79030536.

The previous prime is 118545803. The next prime is 118545827. The reversal of 118545813 is 318545811.

It can be written as a sum of positive squares in only one way, i.e., 118526769 + 19044 = 10887^2 + 138^2 .

It is not a de Polignac number, because 118545813 - 2⁵ = 118545781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118545803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6585870 + ... + 6585887.

It is an arithmetic number, because the mean of its divisors is an integer number (28538809).

Almost surely, 2^118545813 is an apocalyptic number.

It is an amenable number.

118545813 is a deficient number, since it is larger than the sum of its proper divisors (52687041).

118545813 is a wasteful number, since it uses less digits than its factorization.

118545813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13171763 (or 13171760 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 118545813 is about 10887.8745859787. The cubic root of 118545813 is about 491.2419045730.

The spelling of 118545813 in words is "one hundred eighteen million, five hundred forty-five thousand, eight hundred thirteen".