3881112861 has 16 divisors (see below), whose sum is σ = 5262351680. Its totient is φ = 2543685120.

The previous prime is 3881112853. The next prime is 3881112871. The reversal of 3881112861 is 1682111883.

It is not a de Polignac number, because 3881112861 - 2³ = 3881112853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881112841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460461 + ... + 468813.

It is an arithmetic number, because the mean of its divisors is an integer number (328896980).

Almost surely, 2^3881112861 is an apocalyptic number.

It is an amenable number.

3881112861 is a deficient number, since it is larger than the sum of its proper divisors (1381238819).

3881112861 is a wasteful number, since it uses less digits than its factorization.

3881112861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10956.

The product of its digits is 18432, while the sum is 39.

The square root of 3881112861 is about 62298.5783224625. The cubic root of 3881112861 is about 1571.5158201549.

The spelling of 3881112861 in words is "three billion, eight hundred eighty-one million, one hundred twelve thousand, eight hundred sixty-one".