3881856582 has 16 divisors (see below), whose sum is σ = 8626348080. Its totient is φ = 1293952176.

The previous prime is 3881856553. The next prime is 3881856599. The reversal of 3881856582 is 2856581883.

It is a happy number.

3881856582 is a `hidden beast` number, since 3 + 8 + 8 + 1 + 8 + 56 + 582 = 666.

3881856582 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-5 number, since 5×3881856582⁵ (a number of 49 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 71886233 = 3881856582 / (3 + 8 + 8 + 1 + 8 + 5 + 6 + 5 + 8 + 2).

It is a congruent number.

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, 35943063 + ... + 35943170.

It is an arithmetic number, because the mean of its divisors is an integer number (539146755).

Almost surely, 2^3881856582 is an apocalyptic number.

3881856582 is an abundant number, since it is smaller than the sum of its proper divisors (4744491498).

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

3881856582 is a wasteful number, since it uses less digits than its factorization.

3881856582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71886244 (or 71886238 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 54.

The square root of 3881856582 is about 62304.5470411269. The cubic root of 3881856582 is about 1571.6161946876.

The spelling of 3881856582 in words is "three billion, eight hundred eighty-one million, eight hundred fifty-six thousand, five hundred eighty-two".