1296250829 has 2 divisors, whose sum is σ = 1296250830. Its totient is φ = 1296250828.

The previous prime is 1296250819. The next prime is 1296250843. The reversal of 1296250829 is 9280526921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1213477225 + 82773604 = 34835^2 + 9098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1296250829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1296250829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1296250819) 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 as a sum of consecutive naturals, namely, 648125414 + 648125415.

It is an arithmetic number, because the mean of its divisors is an integer number (648125415).

Almost surely, 2^1296250829 is an apocalyptic number.

It is an amenable number.

1296250829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296250829 is an equidigital number, since it uses as much as digits as its factorization.

1296250829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 1296250829 is about 36003.4835675661. The cubic root of 1296250829 is about 1090.3426885912.

The spelling of 1296250829 in words is "one billion, two hundred ninety-six million, two hundred fifty thousand, eight hundred twenty-nine".