18045717 has 4 divisors (see below), whose sum is σ = 24060960. Its totient is φ = 12030476.

The previous prime is 18045679. The next prime is 18045739. The reversal of 18045717 is 71754081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18045717 - 2¹⁸ = 17783573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18045787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3007617 + ... + 3007622.

It is an arithmetic number, because the mean of its divisors is an integer number (6015240).

Almost surely, 2^18045717 is an apocalyptic number.

It is an amenable number.

18045717 is a deficient number, since it is larger than the sum of its proper divisors (6015243).

18045717 is an equidigital number, since it uses as much as digits as its factorization.

18045717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015242.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 18045717 is about 4248.0250705475. The cubic root of 18045717 is about 262.2958267221.

Adding to 18045717 its reverse (71754081), we get a palindrome (89799798).

The spelling of 18045717 in words is "eighteen million, forty-five thousand, seven hundred seventeen".