18054917 has 2 divisors, whose sum is σ = 18054918. Its totient is φ = 18054916.

The previous prime is 18054893. The next prime is 18054929. The reversal of 18054917 is 71945081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13535041 + 4519876 = 3679^2 + 2126^2 .

It is a cyclic number.

It is not a de Polignac number, because 18054917 - 2¹⁴ = 18038533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18054317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9027458 + 9027459.

It is an arithmetic number, because the mean of its divisors is an integer number (9027459).

Almost surely, 2^18054917 is an apocalyptic number.

It is an amenable number.

18054917 is a deficient number, since it is larger than the sum of its proper divisors (1).

18054917 is an equidigital number, since it uses as much as digits as its factorization.

18054917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 18054917 is about 4249.1077887011. The cubic root of 18054917 is about 262.3403933754.

Adding to 18054917 its reverse (71945081), we get a palindrome (89999998).

The spelling of 18054917 in words is "eighteen million, fifty-four thousand, nine hundred seventeen".