18609023 has 2 divisors, whose sum is σ = 18609024. Its totient is φ = 18609022.

The previous prime is 18609007. The next prime is 18609061. The reversal of 18609023 is 32090681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18609023 - 2⁴ = 18609007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18609223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9304511 + 9304512.

It is an arithmetic number, because the mean of its divisors is an integer number (9304512).

Almost surely, 2^18609023 is an apocalyptic number.

18609023 is a deficient number, since it is larger than the sum of its proper divisors (1).

18609023 is an equidigital number, since it uses as much as digits as its factorization.

18609023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 18609023 is about 4313.8176827492. The cubic root of 18609023 is about 264.9971424873.

The spelling of 18609023 in words is "eighteen million, six hundred nine thousand, twenty-three".