3861870384844 has 24 divisors (see below), whose sum is σ = 6839802064368. Its totient is φ = 1907723102400.

The previous prime is 3861870384739. The next prime is 3861870384901. The reversal of 3861870384844 is 4484830781683.

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, 10045899 + ... + 10423234.

It is an arithmetic number, because the mean of its divisors is an integer number (284991752682).

Almost surely, 2^{3861870384844} is an apocalyptic number.

It is an amenable number.

3861870384844 is a deficient number, since it is larger than the sum of its proper divisors (2977931679524).

3861870384844 is a wasteful number, since it uses less digits than its factorization.

3861870384844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20469705 (or 20469703 counting only the distinct ones).

The product of its (nonzero) digits is 99090432, while the sum is 64.

The spelling of 3861870384844 in words is "three trillion, eight hundred sixty-one billion, eight hundred seventy million, three hundred eighty-four thousand, eight hundred forty-four".