3856980831 has 32 divisors (see below), whose sum is σ = 5816966400. Its totient is φ = 2251764480.

The previous prime is 3856980797. The next prime is 3856980871. The reversal of 3856980831 is 1380896583.

It is not a de Polignac number, because 3856980831 - 2⁷ = 3856980703 is a prime.

It is a super-2 number, since 2×3856980831² = 29752602261402901122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856980871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432940 + ... + 441758.

It is an arithmetic number, because the mean of its divisors is an integer number (181780200).

Almost surely, 2^3856980831 is an apocalyptic number.

3856980831 is a deficient number, since it is larger than the sum of its proper divisors (1959985569).

3856980831 is a wasteful number, since it uses less digits than its factorization.

3856980831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9319.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 3856980831 is about 62104.5958927357. The cubic root of 3856980831 is about 1568.2519160392.

The spelling of 3856980831 in words is "three billion, eight hundred fifty-six million, nine hundred eighty thousand, eight hundred thirty-one".