18885498441269 has 2 divisors, whose sum is σ = 18885498441270. Its totient is φ = 18885498441268.

The previous prime is 18885498441259. The next prime is 18885498441311. The reversal of 18885498441269 is 96214489458881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10586270859025 + 8299227582244 = 3253655^2 + 2880838^2 .

It is a cyclic number.

It is not a de Polignac number, because 18885498441269 - 2⁴⁰ = 17785986813493 is a prime.

It is a super-2 number, since 2×18885498441269² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18885498441269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18885498441209) 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, 9442749220634 + 9442749220635.

It is an arithmetic number, because the mean of its divisors is an integer number (9442749220635).

Almost surely, 2^{18885498441269} is an apocalyptic number.

It is an amenable number.

18885498441269 is a deficient number, since it is larger than the sum of its proper divisors (1).

18885498441269 is an equidigital number, since it uses as much as digits as its factorization.

18885498441269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1274019840, while the sum is 77.

The spelling of 18885498441269 in words is "eighteen trillion, eight hundred eighty-five billion, four hundred ninety-eight million, four hundred forty-one thousand, two hundred sixty-nine".