7318118115 has 144 divisors (see below), whose sum is σ = 16100779968. Its totient is φ = 3009600000.

The previous prime is 7318118111. The next prime is 7318118117. The reversal of 7318118115 is 5118118137.

It is a Cunningham number, because it is equal to 85546²-1.

It is not a de Polignac number, because 7318118115 - 2² = 7318118111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7318118115.

It is not an unprimeable number, because it can be changed into a prime (7318118111) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3848665 + ... + 3850565.

It is an arithmetic number, because the mean of its divisors is an integer number (111810972).

Almost surely, 2^7318118115 is an apocalyptic number.

7318118115 is an abundant number, since it is smaller than the sum of its proper divisors (8782661853).

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

7318118115 is a wasteful number, since it uses less digits than its factorization.

7318118115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 2028 counting only the distinct ones).

The product of its digits is 6720, while the sum is 36.

The square root of 7318118115 is about 85545.9999941552. Note that the first 5 decimals coincide. The cubic root of 7318118115 is about 1941.4809709579.

The spelling of 7318118115 in words is "seven billion, three hundred eighteen million, one hundred eighteen thousand, one hundred fifteen".