18240359 has 2 divisors, whose sum is σ = 18240360. Its totient is φ = 18240358.

The previous prime is 18240353. The next prime is 18240377. The reversal of 18240359 is 95304281.

It is a weak prime.

It is an emirp because it is prime and its reverse (95304281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18240359 - 2¹⁶ = 18174823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18240353) 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, 9120179 + 9120180.

It is an arithmetic number, because the mean of its divisors is an integer number (9120180).

Almost surely, 2^18240359 is an apocalyptic number.

18240359 is a deficient number, since it is larger than the sum of its proper divisors (1).

18240359 is an equidigital number, since it uses as much as digits as its factorization.

18240359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 18240359 is about 4270.8733298940. The cubic root of 18240359 is about 263.2355015889.

The spelling of 18240359 in words is "eighteen million, two hundred forty thousand, three hundred fifty-nine".