18975223 has 2 divisors, whose sum is σ = 18975224. Its totient is φ = 18975222.

The previous prime is 18975217. The next prime is 18975227. The reversal of 18975223 is 32257981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18975223 - 2¹⁷ = 18844151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18975227) 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 as a sum of consecutive naturals, namely, 9487611 + 9487612.

It is an arithmetic number, because the mean of its divisors is an integer number (9487612).

Almost surely, 2^18975223 is an apocalyptic number.

18975223 is a deficient number, since it is larger than the sum of its proper divisors (1).

18975223 is an equidigital number, since it uses as much as digits as its factorization.

18975223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 18975223 is about 4356.0558995495. The cubic root of 18975223 is about 266.7241232097.

The spelling of 18975223 in words is "eighteen million, nine hundred seventy-five thousand, two hundred twenty-three".