8163881 has 16 divisors (see below), whose sum is σ = 9331200. Its totient is φ = 7075200.

The previous prime is 8163871. The next prime is 8163917. The reversal of 8163881 is 1883618.

It is a happy number.

It is not a de Polignac number, because 8163881 - 2⁶ = 8163817 is a prime.

It is a super-2 number, since 2×8163881² = 133297905964322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8163821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30215 + ... + 30483.

It is an arithmetic number, because the mean of its divisors is an integer number (583200).

Almost surely, 2^8163881 is an apocalyptic number.

It is an amenable number.

8163881 is a deficient number, since it is larger than the sum of its proper divisors (1167319).

8163881 is a wasteful number, since it uses less digits than its factorization.

8163881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400.

The product of its digits is 9216, while the sum is 35.

The square root of 8163881 is about 2857.2506015399. The cubic root of 8163881 is about 201.3564543592.

The spelling of 8163881 in words is "eight million, one hundred sixty-three thousand, eight hundred eighty-one".