3975728571 has 24 divisors (see below), whose sum is σ = 5768596080. Its totient is φ = 2638573056.

The previous prime is 3975728539. The next prime is 3975728573. The reversal of 3975728571 is 1758275793.

It is a happy number.

It is not a de Polignac number, because 3975728571 - 2⁵ = 3975728539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3975728573) 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, 3331951 + ... + 3333143.

It is an arithmetic number, because the mean of its divisors is an integer number (240358170).

Almost surely, 2^3975728571 is an apocalyptic number.

3975728571 is a deficient number, since it is larger than the sum of its proper divisors (1792867509).

3975728571 is a wasteful number, since it uses less digits than its factorization.

3975728571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555 (or 2552 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The square root of 3975728571 is about 63053.3787437279. The cubic root of 3975728571 is about 1584.1838282884.

The spelling of 3975728571 in words is "three billion, nine hundred seventy-five million, seven hundred twenty-eight thousand, five hundred seventy-one".