3958185861280 has 96 divisors (see below), whose sum is σ = 11031847142400. Its totient is φ = 1313315112960.

The previous prime is 3958185861181. The next prime is 3958185861359. The reversal of 3958185861280 is 821685818593.

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, 56966805 + ... + 57036244.

It is an arithmetic number, because the mean of its divisors is an integer number (114915074400).

Almost surely, 2^{3958185861280} is an apocalyptic number.

It is an amenable number.

3958185861280 is an abundant number, since it is smaller than the sum of its proper divisors (7073661281120).

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

3958185861280 is a wasteful number, since it uses less digits than its factorization.

3958185861280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114003102 (or 114003094 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 64.

The spelling of 3958185861280 in words is "three trillion, nine hundred fifty-eight billion, one hundred eighty-five million, eight hundred sixty-one thousand, two hundred eighty".