3861886441820 has 48 divisors (see below), whose sum is σ = 8916894056448. Its totient is φ = 1393264676160.

The previous prime is 3861886441759. The next prime is 3861886441891. The reversal of 3861886441820 is 281446881683.

3861886441820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3861886441820.

It is a congruent number.

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, 69082412 + ... + 69138291.

It is an arithmetic number, because the mean of its divisors is an integer number (185768626176).

Almost surely, 2^{3861886441820} is an apocalyptic number.

It is an amenable number.

3861886441820 is an abundant number, since it is smaller than the sum of its proper divisors (5055007614628).

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

3861886441820 is a wasteful number, since it uses less digits than its factorization.

3861886441820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138220850 (or 138220848 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 59.

The spelling of 3861886441820 in words is "three trillion, eight hundred sixty-one billion, eight hundred eighty-six million, four hundred forty-one thousand, eight hundred twenty".