18736454717 has 2 divisors, whose sum is σ = 18736454718. Its totient is φ = 18736454716.

The previous prime is 18736454687. The next prime is 18736454747. The reversal of 18736454717 is 71745463781.

It is a balanced prime because it is at equal distance from previous prime (18736454687) and next prime (18736454747).

It can be written as a sum of positive squares in only one way, i.e., 18701656516 + 34798201 = 136754^2 + 5899^2 .

It is an emirp because it is prime and its reverse (71745463781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18736454717 - 2⁸ = 18736454461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18736454747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9368227358 + 9368227359.

It is an arithmetic number, because the mean of its divisors is an integer number (9368227359).

Almost surely, 2^18736454717 is an apocalyptic number.

It is an amenable number.

18736454717 is a deficient number, since it is larger than the sum of its proper divisors (1).

18736454717 is an equidigital number, since it uses as much as digits as its factorization.

18736454717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3951360, while the sum is 53.

The spelling of 18736454717 in words is "eighteen billion, seven hundred thirty-six million, four hundred fifty-four thousand, seven hundred seventeen".