18327223 has 2 divisors, whose sum is σ = 18327224. Its totient is φ = 18327222.

The previous prime is 18327209. The next prime is 18327233. The reversal of 18327223 is 32272381.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18327223 is a prime.

It is equal to p_1170928 and since 18327223 and 1170928 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 18327191 and 18327200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18327203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9163611 + 9163612.

It is an arithmetic number, because the mean of its divisors is an integer number (9163612).

Almost surely, 2^18327223 is an apocalyptic number.

18327223 is a deficient number, since it is larger than the sum of its proper divisors (1).

18327223 is an equidigital number, since it uses as much as digits as its factorization.

18327223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 18327223 is about 4281.0306002177. The cubic root of 18327223 is about 263.6526989230.

The spelling of 18327223 in words is "eighteen million, three hundred twenty-seven thousand, two hundred twenty-three".