18065693 has 2 divisors, whose sum is σ = 18065694. Its totient is φ = 18065692.

The previous prime is 18065683. The next prime is 18065711. The reversal of 18065693 is 39656081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15031129 + 3034564 = 3877^2 + 1742^2 .

It is an emirp because it is prime and its reverse (39656081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18065693 - 2¹² = 18061597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18065683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032846 + 9032847.

It is an arithmetic number, because the mean of its divisors is an integer number (9032847).

Almost surely, 2^18065693 is an apocalyptic number.

It is an amenable number.

18065693 is a deficient number, since it is larger than the sum of its proper divisors (1).

18065693 is an equidigital number, since it uses as much as digits as its factorization.

18065693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 18065693 is about 4250.3756304590. The cubic root of 18065693 is about 262.3925752426.

The spelling of 18065693 in words is "eighteen million, sixty-five thousand, six hundred ninety-three".