3978331760 has 80 divisors (see below), whose sum is σ = 10230449376. Its totient is φ = 1429208064.

The previous prime is 3978331741. The next prime is 3978331771. The reversal of 3978331760 is 671338793.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13214 + ... + 90173.

Almost surely, 2^3978331760 is an apocalyptic number.

It is an amenable number.

3978331760 is an abundant number, since it is smaller than the sum of its proper divisors (6252117616).

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

3978331760 is a wasteful number, since it uses less digits than its factorization.

3978331760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103450 (or 103444 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 47.

The square root of 3978331760 is about 63074.0181057145. The cubic root of 3978331760 is about 1584.5295116933.

The spelling of 3978331760 in words is "three billion, nine hundred seventy-eight million, three hundred thirty-one thousand, seven hundred sixty".