18122163 has 4 divisors (see below), whose sum is σ = 24162888. Its totient is φ = 12081440.

The previous prime is 18122161. The next prime is 18122173. The reversal of 18122163 is 36122181.

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 18122163 - 2¹ = 18122161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18122161) 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, 3020358 + ... + 3020363.

It is an arithmetic number, because the mean of its divisors is an integer number (6040722).

Almost surely, 2^18122163 is an apocalyptic number.

18122163 is a deficient number, since it is larger than the sum of its proper divisors (6040725).

18122163 is an equidigital number, since it uses as much as digits as its factorization.

18122163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6040724.

The product of its digits is 576, while the sum is 24.

The square root of 18122163 is about 4257.0133896900. The cubic root of 18122163 is about 262.6656876876.

The spelling of 18122163 in words is "eighteen million, one hundred twenty-two thousand, one hundred sixty-three".