1344045649 has 2 divisors, whose sum is σ = 1344045650. Its totient is φ = 1344045648.

The previous prime is 1344045611. The next prime is 1344045667. The reversal of 1344045649 is 9465404431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1286513424 + 57532225 = 35868^2 + 7585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344045649 - 2⁹ = 1344045137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1344045679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672022824 + 672022825.

It is an arithmetic number, because the mean of its divisors is an integer number (672022825).

Almost surely, 2^1344045649 is an apocalyptic number.

It is an amenable number.

1344045649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344045649 is an equidigital number, since it uses as much as digits as its factorization.

1344045649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 1344045649 is about 36661.2281436397. The cubic root of 1344045649 is about 1103.5821646699.

The spelling of 1344045649 in words is "one billion, three hundred forty-four million, forty-five thousand, six hundred forty-nine".