3868161831 has 8 divisors (see below), whose sum is σ = 5730610160. Its totient is φ = 2578774536.

The previous prime is 3868161799. The next prime is 3868161859. The reversal of 3868161831 is 1381618683.

It is not a de Polignac number, because 3868161831 - 2⁵ = 3868161799 is a prime.

It is a super-2 number, since 2×3868161831² = 29925351901610545122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868165831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71632600 + ... + 71632653.

It is an arithmetic number, because the mean of its divisors is an integer number (716326270).

Almost surely, 2^3868161831 is an apocalyptic number.

3868161831 is a deficient number, since it is larger than the sum of its proper divisors (1862448329).

3868161831 is a wasteful number, since it uses less digits than its factorization.

3868161831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143265262 (or 143265256 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 3868161831 is about 62194.5482417872. The cubic root of 3868161831 is about 1569.7658556525.

The spelling of 3868161831 in words is "three billion, eight hundred sixty-eight million, one hundred sixty-one thousand, eight hundred thirty-one".