18047023 has 2 divisors, whose sum is σ = 18047024. Its totient is φ = 18047022.

The previous prime is 18046999. The next prime is 18047027. The reversal of 18047023 is 32074081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18047023 - 2¹⁷ = 17915951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18047027) 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, 9023511 + 9023512.

It is an arithmetic number, because the mean of its divisors is an integer number (9023512).

Almost surely, 2^18047023 is an apocalyptic number.

18047023 is a deficient number, since it is larger than the sum of its proper divisors (1).

18047023 is an equidigital number, since it uses as much as digits as its factorization.

18047023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 18047023 is about 4248.1787862565. The cubic root of 18047023 is about 262.3021541716.

The spelling of 18047023 in words is "eighteen million, forty-seven thousand, twenty-three".