3976565128 has 16 divisors (see below), whose sum is σ = 7780236480. Its totient is φ = 1901835408.

The previous prime is 3976565111. The next prime is 3976565191. The reversal of 3976565128 is 8215656793.

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 3 ways as a sum of consecutive naturals, for example, 10805700 + ... + 10806067.

It is an arithmetic number, because the mean of its divisors is an integer number (486264780).

Almost surely, 2^3976565128 is an apocalyptic number.

It is an amenable number.

3976565128 is a deficient number, since it is larger than the sum of its proper divisors (3803671352).

3976565128 is a wasteful number, since it uses less digits than its factorization.

3976565128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21611796 (or 21611792 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 52.

The square root of 3976565128 is about 63060.0121154444. The cubic root of 3976565128 is about 1584.2949330504.

The spelling of 3976565128 in words is "three billion, nine hundred seventy-six million, five hundred sixty-five thousand, one hundred twenty-eight".