3781656875 has 20 divisors (see below), whose sum is σ = 4803075024. Its totient is φ = 2975700000.

The previous prime is 3781656863. The next prime is 3781656911. The reversal of 3781656875 is 5786561873.

It is not a de Polignac number, because 3781656875 - 2⁴ = 3781656859 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3781656875.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11471 + ... + 87720.

Almost surely, 2^3781656875 is an apocalyptic number.

3781656875 is a deficient number, since it is larger than the sum of its proper divisors (1021418149).

3781656875 is an frugal number, since it uses more digits than its factorization.

3781656875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99272 (or 99257 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 56.

The square root of 3781656875 is about 61495.1776564634. The cubic root of 3781656875 is about 1557.9757981995.

The spelling of 3781656875 in words is "three billion, seven hundred eighty-one million, six hundred fifty-six thousand, eight hundred seventy-five".