3856660983 has 72 divisors (see below), whose sum is σ = 6843283200. Its totient is φ = 2081098656.

The previous prime is 3856660981. The next prime is 3856661009. The reversal of 3856660983 is 3890666583.

It is not a de Polignac number, because 3856660983 - 2¹ = 3856660981 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856660981) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3711378 + ... + 3712416.

It is an arithmetic number, because the mean of its divisors is an integer number (95045600).

Almost surely, 2^3856660983 is an apocalyptic number.

3856660983 is a deficient number, since it is larger than the sum of its proper divisors (2986622217).

3856660983 is a wasteful number, since it uses less digits than its factorization.

3856660983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The square root of 3856660983 is about 62102.0207642231. The cubic root of 3856660983 is about 1568.2085646783.

The spelling of 3856660983 in words is "three billion, eight hundred fifty-six million, six hundred sixty thousand, nine hundred eighty-three".