12163091 has 4 divisors (see below), whose sum is σ = 12176112. Its totient is φ = 12150072.

The previous prime is 12163087. The next prime is 12163103. The reversal of 12163091 is 19036121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12163091 - 2² = 12163087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12163001) 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, 4991 + ... + 7016.

It is an arithmetic number, because the mean of its divisors is an integer number (3044028).

Almost surely, 2^12163091 is an apocalyptic number.

12163091 is a deficient number, since it is larger than the sum of its proper divisors (13021).

12163091 is a wasteful number, since it uses less digits than its factorization.

12163091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13020.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 12163091 is about 3487.5623291921. The cubic root of 12163091 is about 229.9753659817.

The spelling of 12163091 in words is "twelve million, one hundred sixty-three thousand, ninety-one".