3975066378 has 48 divisors (see below), whose sum is σ = 9229199616. Its totient is φ = 1232046720.

The previous prime is 3975066377. The next prime is 3975066397. The reversal of 3975066378 is 8736605793.

3975066378 is a `hidden beast` number, since 3 + 9 + 7 + 506 + 63 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (3975066377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52858 + ... + 103653.

It is an arithmetic number, because the mean of its divisors is an integer number (192274992).

Almost surely, 2^3975066378 is an apocalyptic number.

3975066378 is an abundant number, since it is smaller than the sum of its proper divisors (5254133238).

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

3975066378 is a wasteful number, since it uses less digits than its factorization.

3975066378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156619 (or 156616 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The square root of 3975066378 is about 63048.1274741764. The cubic root of 3975066378 is about 1584.0958700966.

The spelling of 3975066378 in words is "three billion, nine hundred seventy-five million, sixty-six thousand, three hundred seventy-eight".