3861885831684 has 24 divisors (see below), whose sum is σ = 9485333622240. Its totient is φ = 1219542894144.

The previous prime is 3861885831679. The next prime is 3861885831733. The reversal of 3861885831684 is 4861385881683.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8469047649 + ... + 8469048104.

It is an arithmetic number, because the mean of its divisors is an integer number (395222234260).

Almost surely, 2^{3861885831684} is an apocalyptic number.

It is an amenable number.

3861885831684 is an abundant number, since it is smaller than the sum of its proper divisors (5623447790556).

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

3861885831684 is a wasteful number, since it uses less digits than its factorization.

3861885831684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938095779 (or 16938095777 counting only the distinct ones).

The product of its digits is 212336640, while the sum is 69.

The spelling of 3861885831684 in words is "three trillion, eight hundred sixty-one billion, eight hundred eighty-five million, eight hundred thirty-one thousand, six hundred eighty-four".