3887385867 has 12 divisors (see below), whose sum is σ = 5617763424. Its totient is φ = 2590367280.

The previous prime is 3887385851. The next prime is 3887385913. The reversal of 3887385867 is 7685837883.

It is not a de Polignac number, because 3887385867 - 2⁴ = 3887385851 is a prime.

It is a super-2 number, since 2×3887385867² = 30223537757902683378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3887385847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81603 + ... + 120140.

It is an arithmetic number, because the mean of its divisors is an integer number (468146952).

Almost surely, 2^3887385867 is an apocalyptic number.

3887385867 is a deficient number, since it is larger than the sum of its proper divisors (1730377557).

3887385867 is a wasteful number, since it uses less digits than its factorization.

3887385867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203890 (or 203887 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 63.

The square root of 3887385867 is about 62348.9042967076. The cubic root of 3887385867 is about 1572.3620397905.

The spelling of 3887385867 in words is "three billion, eight hundred eighty-seven million, three hundred eighty-five thousand, eight hundred sixty-seven".