118931101818 has 16 divisors (see below), whose sum is σ = 237868651200. Its totient is φ = 39642626016.

The previous prime is 118931101813. The next prime is 118931101819. The reversal of 118931101818 is 818101139811.

It is a self number, because there is not a number n which added to its sum of digits gives 118931101818.

It is not an unprimeable number, because it can be changed into a prime (118931101813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9643 + ... + 487806.

It is an arithmetic number, because the mean of its divisors is an integer number (14866790700).

Almost surely, 2^118931101818 is an apocalyptic number.

118931101818 is an abundant number, since it is smaller than the sum of its proper divisors (118937549382).

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

118931101818 is a wasteful number, since it uses less digits than its factorization.

118931101818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537301.

The product of its (nonzero) digits is 13824, while the sum is 42.

The spelling of 118931101818 in words is "one hundred eighteen billion, nine hundred thirty-one million, one hundred one thousand, eight hundred eighteen".