18316307 has 2 divisors, whose sum is σ = 18316308. Its totient is φ = 18316306.

The previous prime is 18316301. The next prime is 18316339. The reversal of 18316307 is 70361381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18316307 - 2¹⁸ = 18054163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18316307.

It is not a weakly prime, because it can be changed into another prime (18316301) 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, 9158153 + 9158154.

It is an arithmetic number, because the mean of its divisors is an integer number (9158154).

Almost surely, 2^18316307 is an apocalyptic number.

18316307 is a deficient number, since it is larger than the sum of its proper divisors (1).

18316307 is an equidigital number, since it uses as much as digits as its factorization.

18316307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 18316307 is about 4279.7554836696. The cubic root of 18316307 is about 263.6003432105.

Adding to 18316307 its reverse (70361381), we get a palindrome (88677688).

The spelling of 18316307 in words is "eighteen million, three hundred sixteen thousand, three hundred seven".