18266713 has 2 divisors, whose sum is σ = 18266714. Its totient is φ = 18266712.

The previous prime is 18266707. The next prime is 18266737. The reversal of 18266713 is 31766281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13927824 + 4338889 = 3732^2 + 2083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18266713 is a prime.

It is not a weakly prime, because it can be changed into another prime (18266513) 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, 9133356 + 9133357.

It is an arithmetic number, because the mean of its divisors is an integer number (9133357).

Almost surely, 2^18266713 is an apocalyptic number.

It is an amenable number.

18266713 is a deficient number, since it is larger than the sum of its proper divisors (1).

18266713 is an equidigital number, since it uses as much as digits as its factorization.

18266713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 18266713 is about 4273.9575337151. The cubic root of 18266713 is about 263.3622163836.

The spelling of 18266713 in words is "eighteen million, two hundred sixty-six thousand, seven hundred thirteen".