1296104549 has 2 divisors, whose sum is σ = 1296104550. Its totient is φ = 1296104548.

The previous prime is 1296104543. The next prime is 1296104603. The reversal of 1296104549 is 9454016921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1252452100 + 43652449 = 35390^2 + 6607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1296104549 - 2²⁰ = 1295055973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1296104543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648052274 + 648052275.

It is an arithmetic number, because the mean of its divisors is an integer number (648052275).

Almost surely, 2^1296104549 is an apocalyptic number.

It is an amenable number.

1296104549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296104549 is an equidigital number, since it uses as much as digits as its factorization.

1296104549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1296104549 is about 36001.4520401608. The cubic root of 1296104549 is about 1090.3016725253.

The spelling of 1296104549 in words is "one billion, two hundred ninety-six million, one hundred four thousand, five hundred forty-nine".