3881426931 has 20 divisors (see below), whose sum is σ = 5799857184. Its totient is φ = 2586870000.

The previous prime is 3881426921. The next prime is 3881426953. The reversal of 3881426931 is 1396241883.

3881426931 is a `hidden beast` number, since 388 + 1 + 4 + 269 + 3 + 1 = 666.

It is not a de Polignac number, because 3881426931 - 2¹⁹ = 3880902643 is a prime.

It is a super-2 number, since 2×3881426931² = 30130950041384157522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3881426921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 539206 + ... + 546356.

Almost surely, 2^3881426931 is an apocalyptic number.

3881426931 is a deficient number, since it is larger than the sum of its proper divisors (1918430253).

3881426931 is an equidigital number, since it uses as much as digits as its factorization.

3881426931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13864 (or 13855 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 3881426931 is about 62301.0989549944. The cubic root of 3881426931 is about 1571.5582094282.

The spelling of 3881426931 in words is "three billion, eight hundred eighty-one million, four hundred twenty-six thousand, nine hundred thirty-one".