3864555078 has 16 divisors (see below), whose sum is σ = 7808792880. Its totient is φ = 1274904576.

The previous prime is 3864555043. The next prime is 3864555127. The reversal of 3864555078 is 8705554683.

It is a happy number.

3864555078 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 3864555078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3319483 + ... + 3320646.

It is an arithmetic number, because the mean of its divisors is an integer number (488049555).

Almost surely, 2^3864555078 is an apocalyptic number.

3864555078 is an abundant number, since it is smaller than the sum of its proper divisors (3944237802).

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

3864555078 is a wasteful number, since it uses less digits than its factorization.

3864555078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6640231.

The product of its (nonzero) digits is 4032000, while the sum is 51.

The square root of 3864555078 is about 62165.5457468202. The cubic root of 3864555078 is about 1569.2778100311.

The spelling of 3864555078 in words is "three billion, eight hundred sixty-four million, five hundred fifty-five thousand, seventy-eight".