3115661508 has 18 divisors (see below), whose sum is σ = 7875700014. Its totient is φ = 1038553824.

The previous prime is 3115661491. The next prime is 3115661533. The reversal of 3115661508 is 8051665113.

3115661508 is a `hidden beast` number, since 31 + 1 + 5 + 6 + 615 + 0 + 8 = 666.

3115661508 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2141097984 + 974563524 = 46272^2 + 31218^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 86546153 = 3115661508 / (3 + 1 + 1 + 5 + 6 + 6 + 1 + 5 + 0 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43273041 + ... + 43273112.

Almost surely, 2^3115661508 is an apocalyptic number.

It is an amenable number.

3115661508 is an abundant number, since it is smaller than the sum of its proper divisors (4760038506).

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

3115661508 is a wasteful number, since it uses less digits than its factorization.

3115661508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86546163 (or 86546158 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 3115661508 is about 55818.1109318472. The cubic root of 3115661508 is about 1460.5511005153.

The spelling of 3115661508 in words is "three billion, one hundred fifteen million, six hundred sixty-one thousand, five hundred eight".