1296044149 has 2 divisors, whose sum is σ = 1296044150. Its totient is φ = 1296044148.

The previous prime is 1296044107. The next prime is 1296044161. The reversal of 1296044149 is 9414406921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828403524 + 467640625 = 28782^2 + 21625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1296044149 - 2¹⁹ = 1295519861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1296044179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648022074 + 648022075.

It is an arithmetic number, because the mean of its divisors is an integer number (648022075).

Almost surely, 2^1296044149 is an apocalyptic number.

It is an amenable number.

1296044149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296044149 is an equidigital number, since it uses as much as digits as its factorization.

1296044149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1296044149 is about 36000.6131753336. The cubic root of 1296044149 is about 1090.2847358144.

The spelling of 1296044149 in words is "one billion, two hundred ninety-six million, forty-four thousand, one hundred forty-nine".