7915411818 has 24 divisors (see below), whose sum is σ = 18052694400. Its totient is φ = 2499603624.

The previous prime is 7915411811. The next prime is 7915411891. The reversal of 7915411818 is 8181145197.

7915411818 is a `hidden beast` number, since 7 + 91 + 541 + 1 + 8 + 18 = 666.

It is not an unprimeable number, because it can be changed into a prime (7915411811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11571898 + ... + 11572581.

It is an arithmetic number, because the mean of its divisors is an integer number (752195600).

Almost surely, 2^7915411818 is an apocalyptic number.

7915411818 is an abundant number, since it is smaller than the sum of its proper divisors (10137282582).

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

7915411818 is a wasteful number, since it uses less digits than its factorization.

7915411818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23144506 (or 23144503 counting only the distinct ones).

The product of its digits is 80640, while the sum is 45.

The square root of 7915411818 is about 88968.6001800635. The cubic root of 7915411818 is about 1992.9259935492.

The spelling of 7915411818 in words is "seven billion, nine hundred fifteen million, four hundred eleven thousand, eight hundred eighteen".