1296358849 has 2 divisors, whose sum is σ = 1296358850. Its totient is φ = 1296358848.

The previous prime is 1296358831. The next prime is 1296358859. The reversal of 1296358849 is 9488536921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1278777600 + 17581249 = 35760^2 + 4193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1296358849 - 2¹⁵ = 1296326081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1296358849.

It is not a weakly prime, because it can be changed into another prime (1296358859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648179424 + 648179425.

It is an arithmetic number, because the mean of its divisors is an integer number (648179425).

Almost surely, 2^1296358849 is an apocalyptic number.

It is an amenable number.

1296358849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296358849 is an equidigital number, since it uses as much as digits as its factorization.

1296358849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 55.

The square root of 1296358849 is about 36004.9836689312. The cubic root of 1296358849 is about 1090.3729747939.

The spelling of 1296358849 in words is "one billion, two hundred ninety-six million, three hundred fifty-eight thousand, eight hundred forty-nine".