18282317 has 2 divisors, whose sum is σ = 18282318. Its totient is φ = 18282316.

The previous prime is 18282301. The next prime is 18282323. The reversal of 18282317 is 71328281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11464996 + 6817321 = 3386^2 + 2611^2 .

It is a cyclic number.

It is not a de Polignac number, because 18282317 - 2⁴ = 18282301 is a prime.

It is a super-2 number, since 2×18282317² = 668486229776978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18282337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9141158 + 9141159.

It is an arithmetic number, because the mean of its divisors is an integer number (9141159).

Almost surely, 2^18282317 is an apocalyptic number.

It is an amenable number.

18282317 is a deficient number, since it is larger than the sum of its proper divisors (1).

18282317 is an equidigital number, since it uses as much as digits as its factorization.

18282317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 32.

The square root of 18282317 is about 4275.7826184220. The cubic root of 18282317 is about 263.4371857997.

The spelling of 18282317 in words is "eighteen million, two hundred eighty-two thousand, three hundred seventeen".