18486941717 has 2 divisors, whose sum is σ = 18486941718. Its totient is φ = 18486941716.

The previous prime is 18486941677. The next prime is 18486941719. The reversal of 18486941717 is 71714968481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11207609956 + 7279331761 = 105866^2 + 85319^2 .

It is a cyclic number.

It is not a de Polignac number, because 18486941717 - 2¹⁴ = 18486925333 is a prime.

Together with 18486941719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18486941719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9243470858 + 9243470859.

It is an arithmetic number, because the mean of its divisors is an integer number (9243470859).

Almost surely, 2^18486941717 is an apocalyptic number.

It is an amenable number.

18486941717 is a deficient number, since it is larger than the sum of its proper divisors (1).

18486941717 is an equidigital number, since it uses as much as digits as its factorization.

18486941717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 56.

The spelling of 18486941717 in words is "eighteen billion, four hundred eighty-six million, nine hundred forty-one thousand, seven hundred seventeen".