3877806856 has 32 divisors (see below), whose sum is σ = 9065004480. Its totient is φ = 1510833600.

The previous prime is 3877806853. The next prime is 3877806859. The reversal of 3877806856 is 6586087783.

It is an interprime number because it is at equal distance from previous prime (3877806853) and next prime (3877806859).

It is a self number, because there is not a number n which added to its sum of digits gives 3877806856.

It is not an unprimeable number, because it can be changed into a prime (3877806853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3146955 + ... + 3148186.

It is an arithmetic number, because the mean of its divisors is an integer number (283281390).

Almost surely, 2^3877806856 is an apocalyptic number.

It is an amenable number.

3877806856 is an abundant number, since it is smaller than the sum of its proper divisors (5187197624).

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

3877806856 is a wasteful number, since it uses less digits than its factorization.

3877806856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295165 (or 6295161 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 58.

The square root of 3877806856 is about 62272.0391186927. The cubic root of 3877806856 is about 1571.0694778098.

The spelling of 3877806856 in words is "three billion, eight hundred seventy-seven million, eight hundred six thousand, eight hundred fifty-six".