3868778616 has 16 divisors (see below), whose sum is σ = 9671946600. Its totient is φ = 1289592864.

The previous prime is 3868778603. The next prime is 3868778657. The reversal of 3868778616 is 6168778683.

It is a self number, because there is not a number n which added to its sum of digits gives 3868778616.

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, 80599531 + ... + 80599578.

Almost surely, 2^3868778616 is an apocalyptic number.

It is an amenable number.

3868778616 is an abundant number, since it is smaller than the sum of its proper divisors (5803167984).

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

3868778616 is a wasteful number, since it uses less digits than its factorization.

3868778616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161199118 (or 161199114 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 60.

The square root of 3868778616 is about 62199.5065575283. The cubic root of 3868778616 is about 1569.8492851659.

The spelling of 3868778616 in words is "three billion, eight hundred sixty-eight million, seven hundred seventy-eight thousand, six hundred sixteen".