3975407648 has 24 divisors (see below), whose sum is σ = 7907276412. Its totient is φ = 1967210496.

The previous prime is 3975407641. The next prime is 3975407707. The reversal of 3975407648 is 8467045793.

3975407648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3887273104 + 88134544 = 62348^2 + 9388^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3975407648.

It is not an unprimeable number, because it can be changed into a prime (3975407641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637265 + ... + 643472.

Almost surely, 2^3975407648 is an apocalyptic number.

It is an amenable number.

3975407648 is a deficient number, since it is larger than the sum of its proper divisors (3931868764).

3975407648 is a wasteful number, since it uses less digits than its factorization.

3975407648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280844 (or 1280836 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The square root of 3975407648 is about 63050.8338406400. The cubic root of 3975407648 is about 1584.1412017444.

It can be divided in two parts, 397 and 5407648, that added together give a palindrome (5408045).

The spelling of 3975407648 in words is "three billion, nine hundred seventy-five million, four hundred seven thousand, six hundred forty-eight".