18665327 has 2 divisors, whose sum is σ = 18665328. Its totient is φ = 18665326.

The previous prime is 18665321. The next prime is 18665333. The reversal of 18665327 is 72356681.

It is a balanced prime because it is at equal distance from previous prime (18665321) and next prime (18665333).

It is a cyclic number.

It is not a de Polignac number, because 18665327 - 2⁸ = 18665071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18665321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9332663 + 9332664.

It is an arithmetic number, because the mean of its divisors is an integer number (9332664).

Almost surely, 2^18665327 is an apocalyptic number.

18665327 is a deficient number, since it is larger than the sum of its proper divisors (1).

18665327 is an equidigital number, since it uses as much as digits as its factorization.

18665327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 18665327 is about 4320.3387598659. The cubic root of 18665327 is about 265.2641344100.

The spelling of 18665327 in words is "eighteen million, six hundred sixty-five thousand, three hundred twenty-seven".