1288242954169 has 2 divisors, whose sum is σ = 1288242954170. Its totient is φ = 1288242954168.

The previous prime is 1288242954161. The next prime is 1288242954203. The reversal of 1288242954169 is 9614592428821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 726522683769 + 561720270400 = 852363^2 + 749480^2 .

It is an emirp because it is prime and its reverse (9614592428821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1288242954169 - 2³ = 1288242954161 is a prime.

It is a super-2 number, since 2×1288242954169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1288242954161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644121477084 + 644121477085.

It is an arithmetic number, because the mean of its divisors is an integer number (644121477085).

Almost surely, 2^{1288242954169} is an apocalyptic number.

It is an amenable number.

1288242954169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288242954169 is an equidigital number, since it uses as much as digits as its factorization.

1288242954169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19906560, while the sum is 61.

The spelling of 1288242954169 in words is "one trillion, two hundred eighty-eight billion, two hundred forty-two million, nine hundred fifty-four thousand, one hundred sixty-nine".