18059317 has 2 divisors, whose sum is σ = 18059318. Its totient is φ = 18059316.

The previous prime is 18059303. The next prime is 18059339. The reversal of 18059317 is 71395081.

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., 17631601 + 427716 = 4199^2 + 654^2 .

It is a cyclic number.

It is not a de Polignac number, because 18059317 - 2⁷ = 18059189 is a prime.

It is a super-2 number, since 2×18059317² = 652277861012978, which contains 22 as substring.

It is equal to p_1154878 and since 18059317 and 1154878 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18059387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9029658 + 9029659.

It is an arithmetic number, because the mean of its divisors is an integer number (9029659).

Almost surely, 2^18059317 is an apocalyptic number.

It is an amenable number.

18059317 is a deficient number, since it is larger than the sum of its proper divisors (1).

18059317 is an equidigital number, since it uses as much as digits as its factorization.

18059317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 18059317 is about 4249.6255129129. The cubic root of 18059317 is about 262.3617025101.

The spelling of 18059317 in words is "eighteen million, fifty-nine thousand, three hundred seventeen".