9156881 has 4 divisors (see below), whose sum is σ = 9163812. Its totient is φ = 9149952.

The previous prime is 9156857. The next prime is 9156887. The reversal of 9156881 is 1886519.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5216656 + 3940225 = 2284^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 9156881 - 2¹⁰ = 9155857 is a prime.

It is a super-2 number, since 2×9156881² = 167696939296322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9156887) 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 3 ways as a sum of consecutive naturals, for example, 800 + ... + 4353.

It is an arithmetic number, because the mean of its divisors is an integer number (2290953).

Almost surely, 2^9156881 is an apocalyptic number.

It is an amenable number.

9156881 is a deficient number, since it is larger than the sum of its proper divisors (6931).

9156881 is a wasteful number, since it uses less digits than its factorization.

9156881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6930.

The product of its digits is 17280, while the sum is 38.

The square root of 9156881 is about 3026.0338729102. The cubic root of 9156881 is about 209.2100404400.

The spelling of 9156881 in words is "nine million, one hundred fifty-six thousand, eight hundred eighty-one".