3867428831 has 24 divisors (see below), whose sum is σ = 4552526160. Its totient is φ = 3275620992.

The previous prime is 3867428827. The next prime is 3867428857. The reversal of 3867428831 is 1388247683.

It is not a de Polignac number, because 3867428831 - 2² = 3867428827 is a prime.

It is a super-2 number, since 2×3867428831² = 29914011525700053122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3867428831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867428801) 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, 1585745 + ... + 1588181.

It is an arithmetic number, because the mean of its divisors is an integer number (189688590).

Almost surely, 2^3867428831 is an apocalyptic number.

3867428831 is a deficient number, since it is larger than the sum of its proper divisors (685097329).

3867428831 is a wasteful number, since it uses less digits than its factorization.

3867428831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823 (or 2816 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The square root of 3867428831 is about 62188.6551631405. The cubic root of 3867428831 is about 1569.6666947668. Note that the first 4 decimals are identical.

The spelling of 3867428831 in words is "three billion, eight hundred sixty-seven million, four hundred twenty-eight thousand, eight hundred thirty-one".