18895223 has 2 divisors, whose sum is σ = 18895224. Its totient is φ = 18895222.

The previous prime is 18895207. The next prime is 18895231. The reversal of 18895223 is 32259881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18895223 - 2⁴ = 18895207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18894223) 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 as a sum of consecutive naturals, namely, 9447611 + 9447612.

It is an arithmetic number, because the mean of its divisors is an integer number (9447612).

Almost surely, 2^18895223 is an apocalyptic number.

18895223 is a deficient number, since it is larger than the sum of its proper divisors (1).

18895223 is an equidigital number, since it uses as much as digits as its factorization.

18895223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 18895223 is about 4346.8635819404. The cubic root of 18895223 is about 266.3487567407.

The spelling of 18895223 in words is "eighteen million, eight hundred ninety-five thousand, two hundred twenty-three".