1344719809 has 2 divisors, whose sum is σ = 1344719810. Its totient is φ = 1344719808.

The previous prime is 1344719791. The next prime is 1344719837. The reversal of 1344719809 is 9089174431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1283645584 + 61074225 = 35828^2 + 7815^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344719809 - 2⁹ = 1344719297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1344719609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672359904 + 672359905.

It is an arithmetic number, because the mean of its divisors is an integer number (672359905).

Almost surely, 2^1344719809 is an apocalyptic number.

It is an amenable number.

1344719809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344719809 is an equidigital number, since it uses as much as digits as its factorization.

1344719809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1344719809 is about 36670.4214456284. The cubic root of 1344719809 is about 1103.7666491266.

The spelling of 1344719809 in words is "one billion, three hundred forty-four million, seven hundred nineteen thousand, eight hundred nine".