1344641489 has 2 divisors, whose sum is σ = 1344641490. Its totient is φ = 1344641488.

The previous prime is 1344641339. The next prime is 1344641497. The reversal of 1344641489 is 9841464431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050861889 + 293779600 = 32417^2 + 17140^2 .

It is an emirp because it is prime and its reverse (9841464431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1344641489 - 2²⁴ = 1327864273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1344640489) 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, 672320744 + 672320745.

It is an arithmetic number, because the mean of its divisors is an integer number (672320745).

Almost surely, 2^1344641489 is an apocalyptic number.

It is an amenable number.

1344641489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344641489 is an equidigital number, since it uses as much as digits as its factorization.

1344641489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The square root of 1344641489 is about 36669.3535394340. The cubic root of 1344641489 is about 1103.7452199580.

The spelling of 1344641489 in words is "one billion, three hundred forty-four million, six hundred forty-one thousand, four hundred eighty-nine".