18009683 has 2 divisors, whose sum is σ = 18009684. Its totient is φ = 18009682.

The previous prime is 18009679. The next prime is 18009763. The reversal of 18009683 is 38690081.

It is a weak prime.

It is an emirp because it is prime and its reverse (38690081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18009683 - 2² = 18009679 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18009583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9004841 + 9004842.

It is an arithmetic number, because the mean of its divisors is an integer number (9004842).

Almost surely, 2^18009683 is an apocalyptic number.

18009683 is a deficient number, since it is larger than the sum of its proper divisors (1).

18009683 is an equidigital number, since it uses as much as digits as its factorization.

18009683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 18009683 is about 4243.7816861851. The cubic root of 18009683 is about 262.1211247725.

The spelling of 18009683 in words is "eighteen million, nine thousand, six hundred eighty-three".