18350931017 has 2 divisors, whose sum is σ = 18350931018. Its totient is φ = 18350931016.

The previous prime is 18350930981. The next prime is 18350931019. The reversal of 18350931017 is 71013905381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16272574096 + 2078356921 = 127564^2 + 45589^2 .

It is an emirp because it is prime and its reverse (71013905381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18350931017 - 2¹⁸ = 18350668873 is a prime.

Together with 18350931019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18350931019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9175465508 + 9175465509.

It is an arithmetic number, because the mean of its divisors is an integer number (9175465509).

Almost surely, 2^18350931017 is an apocalyptic number.

It is an amenable number.

18350931017 is a deficient number, since it is larger than the sum of its proper divisors (1).

18350931017 is an equidigital number, since it uses as much as digits as its factorization.

18350931017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The spelling of 18350931017 in words is "eighteen billion, three hundred fifty million, nine hundred thirty-one thousand, seventeen".