3815689868 has 12 divisors (see below), whose sum is σ = 6681976392. Its totient is φ = 1906553760.

The previous prime is 3815689847. The next prime is 3815689883. The reversal of 3815689868 is 8689865183.

It is a self number, because there is not a number n which added to its sum of digits gives 3815689868.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316130 + ... + 327977.

It is an arithmetic number, because the mean of its divisors is an integer number (556831366).

Almost surely, 2^3815689868 is an apocalyptic number.

It is an amenable number.

3815689868 is a deficient number, since it is larger than the sum of its proper divisors (2866286524).

3815689868 is a wasteful number, since it uses less digits than its factorization.

3815689868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645592 (or 645590 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 62.

The square root of 3815689868 is about 61771.2705713587. The cubic root of 3815689868 is about 1562.6355115580.

The spelling of 3815689868 in words is "three billion, eight hundred fifteen million, six hundred eighty-nine thousand, eight hundred sixty-eight".