3978654560 has 24 divisors (see below), whose sum is σ = 9399571776. Its totient is φ = 1591461760.

The previous prime is 3978654523. The next prime is 3978654583. The reversal of 3978654560 is 654568793.

3978654560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 12433136 + ... + 12433455.

It is an arithmetic number, because the mean of its divisors is an integer number (391648824).

Almost surely, 2^3978654560 is an apocalyptic number.

It is an amenable number.

3978654560 is an abundant number, since it is smaller than the sum of its proper divisors (5420917216).

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

3978654560 is a wasteful number, since it uses less digits than its factorization.

3978654560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24866606 (or 24866598 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 53.

The square root of 3978654560 is about 63076.5769521460. The cubic root of 3978654560 is about 1584.5723665316.

The spelling of 3978654560 in words is "three billion, nine hundred seventy-eight million, six hundred fifty-four thousand, five hundred sixty".