18065417 has 2 divisors, whose sum is σ = 18065418. Its totient is φ = 18065416.

The previous prime is 18065401. The next prime is 18065449. The reversal of 18065417 is 71456081.

It is a happy number.

It is an a-pointer prime, because the next prime (18065449) can be obtained adding 18065417 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15178816 + 2886601 = 3896^2 + 1699^2 .

It is a cyclic number.

It is not a de Polignac number, because 18065417 - 2⁴ = 18065401 is a prime.

It is not a weakly prime, because it can be changed into another prime (18065477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032708 + 9032709.

It is an arithmetic number, because the mean of its divisors is an integer number (9032709).

Almost surely, 2^18065417 is an apocalyptic number.

It is an amenable number.

18065417 is a deficient number, since it is larger than the sum of its proper divisors (1).

18065417 is an equidigital number, since it uses as much as digits as its factorization.

18065417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 18065417 is about 4250.3431626164. The cubic root of 18065417 is about 262.3912389949.

The spelling of 18065417 in words is "eighteen million, sixty-five thousand, four hundred seventeen".