18168701 has 2 divisors, whose sum is σ = 18168702. Its totient is φ = 18168700.

The previous prime is 18168691. The next prime is 18168713. The reversal of 18168701 is 10786181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12432676 + 5736025 = 3526^2 + 2395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18168701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18168721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9084350 + 9084351.

It is an arithmetic number, because the mean of its divisors is an integer number (9084351).

Almost surely, 2^18168701 is an apocalyptic number.

It is an amenable number.

18168701 is a deficient number, since it is larger than the sum of its proper divisors (1).

18168701 is an equidigital number, since it uses as much as digits as its factorization.

18168701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 18168701 is about 4262.4759236857. The cubic root of 18168701 is about 262.8903387024.

The spelling of 18168701 in words is "eighteen million, one hundred sixty-eight thousand, seven hundred one".