3868778684 has 12 divisors (see below), whose sum is σ = 6802451208. Its totient is φ = 1925221200.

The previous prime is 3868778659. The next prime is 3868778699. The reversal of 3868778684 is 4868778683.

3868778684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3868778684.

It is a congruent number.

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, 2291087 + ... + 2292774.

It is an arithmetic number, because the mean of its divisors is an integer number (566870934).

Almost surely, 2^3868778684 is an apocalyptic number.

It is an amenable number.

3868778684 is a deficient number, since it is larger than the sum of its proper divisors (2933672524).

3868778684 is a wasteful number, since it uses less digits than its factorization.

3868778684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584076 (or 4584074 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 65.

The square root of 3868778684 is about 62199.5071041564. The cubic root of 3868778684 is about 1569.8492943634.

Subtracting 3868778684 from its reverse (4868778683), we obtain a palindrome (999999999).

The spelling of 3868778684 in words is "three billion, eight hundred sixty-eight million, seven hundred seventy-eight thousand, six hundred eighty-four".