3868255664 has 80 divisors (see below), whose sum is σ = 9420730368. Its totient is φ = 1497712896.

The previous prime is 3868255597. The next prime is 3868255681. The reversal of 3868255664 is 4665528683.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40169 + ... + 96695.

Almost surely, 2^3868255664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3868255664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4710365184).

3868255664 is an abundant number, since it is smaller than the sum of its proper divisors (5552474704).

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

3868255664 is a wasteful number, since it uses less digits than its factorization.

3868255664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56602 (or 56596 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 53.

The square root of 3868255664 is about 62195.3025878965. The cubic root of 3868255664 is about 1569.7785485590.

The spelling of 3868255664 in words is "three billion, eight hundred sixty-eight million, two hundred fifty-five thousand, six hundred sixty-four".