7813115916 has 48 divisors (see below), whose sum is σ = 19032910848. Its totient is φ = 2489872000.

The previous prime is 7813115909. The next prime is 7813115917. The reversal of 7813115916 is 6195113187.

It is a super-2 number, since 2×7813115916² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7813115917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642856 + ... + 654896.

It is an arithmetic number, because the mean of its divisors is an integer number (396518976).

Almost surely, 2^7813115916 is an apocalyptic number.

It is an amenable number.

7813115916 is an abundant number, since it is smaller than the sum of its proper divisors (11219794932).

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

7813115916 is a wasteful number, since it uses less digits than its factorization.

7813115916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14422 (or 14420 counting only the distinct ones).

The product of its digits is 45360, while the sum is 42.

The square root of 7813115916 is about 88391.8317266929. The cubic root of 7813115916 is about 1984.3034578943.

The spelling of 7813115916 in words is "seven billion, eight hundred thirteen million, one hundred fifteen thousand, nine hundred sixteen".