18068693 has 2 divisors, whose sum is σ = 18068694. Its totient is φ = 18068692.

The previous prime is 18068681. The next prime is 18068717. The reversal of 18068693 is 39686081.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18037009 + 31684 = 4247^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 18068693 - 2¹⁰ = 18067669 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18068693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18068893) 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, 9034346 + 9034347.

It is an arithmetic number, because the mean of its divisors is an integer number (9034347).

Almost surely, 2^18068693 is an apocalyptic number.

It is an amenable number.

18068693 is a deficient number, since it is larger than the sum of its proper divisors (1).

18068693 is an equidigital number, since it uses as much as digits as its factorization.

18068693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18068693 is about 4250.7285257941. The cubic root of 18068693 is about 262.4070987957.

The spelling of 18068693 in words is "eighteen million, sixty-eight thousand, six hundred ninety-three".