3864375891 has 8 divisors (see below), whose sum is σ = 5725001360. Its totient is φ = 2576250576.

The previous prime is 3864375887. The next prime is 3864375899. The reversal of 3864375891 is 1985734683.

3864375891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3864375891 - 2² = 3864375887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3864375899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71562490 + ... + 71562543.

It is an arithmetic number, because the mean of its divisors is an integer number (715625170).

Almost surely, 2^3864375891 is an apocalyptic number.

3864375891 is a deficient number, since it is larger than the sum of its proper divisors (1860625469).

3864375891 is a wasteful number, since it uses less digits than its factorization.

3864375891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143125042 (or 143125036 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 3864375891 is about 62164.1045218219. The cubic root of 3864375891 is about 1569.2535555332.

The spelling of 3864375891 in words is "three billion, eight hundred sixty-four million, three hundred seventy-five thousand, eight hundred ninety-one".