18264523 has 2 divisors, whose sum is σ = 18264524. Its totient is φ = 18264522.

The previous prime is 18264509. The next prime is 18264539. The reversal of 18264523 is 32546281.

It is a weak prime.

It is an emirp because it is prime and its reverse (32546281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18264523 - 2¹³ = 18256331 is a prime.

It is not a weakly prime, because it can be changed into another prime (18264503) 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, 9132261 + 9132262.

It is an arithmetic number, because the mean of its divisors is an integer number (9132262).

Almost surely, 2^18264523 is an apocalyptic number.

18264523 is a deficient number, since it is larger than the sum of its proper divisors (1).

18264523 is an equidigital number, since it uses as much as digits as its factorization.

18264523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

The square root of 18264523 is about 4273.7013232092. The cubic root of 18264523 is about 263.3516911128.

The spelling of 18264523 in words is "eighteen million, two hundred sixty-four thousand, five hundred twenty-three".