18841752387917 has 2 divisors, whose sum is σ = 18841752387918. Its totient is φ = 18841752387916.

The previous prime is 18841752387911. The next prime is 18841752387923. The reversal of 18841752387917 is 71978325714881.

It is a balanced prime because it is at equal distance from previous prime (18841752387911) and next prime (18841752387923).

It can be written as a sum of positive squares in only one way, i.e., 17077812465961 + 1763939921956 = 4132531^2 + 1328134^2 .

It is an emirp because it is prime and its reverse (71978325714881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18841752387917 - 2⁴ = 18841752387901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18841752387911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9420876193958 + 9420876193959.

It is an arithmetic number, because the mean of its divisors is an integer number (9420876193959).

Almost surely, 2^{18841752387917} is an apocalyptic number.

It is an amenable number.

18841752387917 is a deficient number, since it is larger than the sum of its proper divisors (1).

18841752387917 is an equidigital number, since it uses as much as digits as its factorization.

18841752387917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189665280, while the sum is 71.

The spelling of 18841752387917 in words is "eighteen trillion, eight hundred forty-one billion, seven hundred fifty-two million, three hundred eighty-seven thousand, nine hundred seventeen".