18056317 has 2 divisors, whose sum is σ = 18056318. Its totient is φ = 18056316.

The previous prime is 18056287. The next prime is 18056321. The reversal of 18056317 is 71365081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16168441 + 1887876 = 4021^2 + 1374^2 .

It is a cyclic number.

It is not a de Polignac number, because 18056317 - 2¹⁵ = 18023549 is a prime.

It is equal to p_1154695 and since 18056317 and 1154695 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 (18056347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9028158 + 9028159.

It is an arithmetic number, because the mean of its divisors is an integer number (9028159).

Almost surely, 2^18056317 is an apocalyptic number.

It is an amenable number.

18056317 is a deficient number, since it is larger than the sum of its proper divisors (1).

18056317 is an equidigital number, since it uses as much as digits as its factorization.

18056317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 18056317 is about 4249.2725259743. The cubic root of 18056317 is about 262.3471739301.

The spelling of 18056317 in words is "eighteen million, fifty-six thousand, three hundred seventeen".