1296593890369 has 4 divisors (see below), whose sum is σ = 1296725440644. Its totient is φ = 1296462340096.

The previous prime is 1296593890349. The next prime is 1296593890381. The reversal of 1296593890369 is 9630983956921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 570647289744 + 725946600625 = 755412^2 + 852025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1296593890369 is a prime.

It is a super-2 number, since 2×1296593890369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1296593890298 and 1296593890307.

It is not an unprimeable number, because it can be changed into a prime (1296593890349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65760352 + ... + 65780065.

It is an arithmetic number, because the mean of its divisors is an integer number (324181360161).

Almost surely, 2^{1296593890369} is an apocalyptic number.

It is an amenable number.

1296593890369 is a deficient number, since it is larger than the sum of its proper divisors (131550275).

1296593890369 is an equidigital number, since it uses as much as digits as its factorization.

1296593890369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131550274.

The product of its (nonzero) digits is 170061120, while the sum is 70.

The spelling of 1296593890369 in words is "one trillion, two hundred ninety-six billion, five hundred ninety-three million, eight hundred ninety thousand, three hundred sixty-nine".