3979215018 has 32 divisors (see below), whose sum is σ = 8844966720. Its totient is φ = 1326065040.

The previous prime is 3979214989. The next prime is 3979215043. The reversal of 3979215018 is 8105129793.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290688 + ... + 304068.

It is an arithmetic number, because the mean of its divisors is an integer number (276405210).

Almost surely, 2^3979215018 is an apocalyptic number.

3979215018 is an abundant number, since it is smaller than the sum of its proper divisors (4865751702).

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

3979215018 is a wasteful number, since it uses less digits than its factorization.

3979215018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18899 (or 18893 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 3979215018 is about 63081.0194749578. The cubic root of 3979215018 is about 1584.6467672743.

The spelling of 3979215018 in words is "three billion, nine hundred seventy-nine million, two hundred fifteen thousand, eighteen".