18229163 has 4 divisors (see below), whose sum is σ = 18284568. Its totient is φ = 18173760.

The previous prime is 18229157. The next prime is 18229177. The reversal of 18229163 is 36192281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36192281 = 1213 ⋅29837.

It is a cyclic number.

It is not a de Polignac number, because 18229163 - 2¹⁶ = 18163627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18229103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27206 + ... + 27867.

It is an arithmetic number, because the mean of its divisors is an integer number (4571142).

Almost surely, 2^18229163 is an apocalyptic number.

18229163 is a deficient number, since it is larger than the sum of its proper divisors (55405).

18229163 is an equidigital number, since it uses as much as digits as its factorization.

18229163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55404.

The product of its digits is 5184, while the sum is 32.

The square root of 18229163 is about 4269.5623897538. The cubic root of 18229163 is about 263.1816322566.

The spelling of 18229163 in words is "eighteen million, two hundred twenty-nine thousand, one hundred sixty-three".