3887645886 has 48 divisors (see below), whose sum is σ = 8796936096. Its totient is φ = 1238485248.

The previous prime is 3887645869. The next prime is 3887645911. The reversal of 3887645886 is 6885467883.

3887645886 is a `hidden beast` number, since 38 + 8 + 76 + 458 + 86 = 666.

It is a super-2 number, since 2×3887645886² = 30227581069865449992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 589986 + ... + 596538.

It is an arithmetic number, because the mean of its divisors is an integer number (183269502).

Almost surely, 2^3887645886 is an apocalyptic number.

3887645886 is an abundant number, since it is smaller than the sum of its proper divisors (4909290210).

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

3887645886 is a wasteful number, since it uses less digits than its factorization.

3887645886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8017 (or 8014 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 63.

The square root of 3887645886 is about 62350.9894548595. The cubic root of 3887645886 is about 1572.3970963302.

The spelling of 3887645886 in words is "three billion, eight hundred eighty-seven million, six hundred forty-five thousand, eight hundred eighty-six".