1244455361 has 2 divisors, whose sum is σ = 1244455362. Its totient is φ = 1244455360.

The previous prime is 1244455297. The next prime is 1244455363. The reversal of 1244455361 is 1635544421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 768342961 + 476112400 = 27719^2 + 21820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244455361 - 2⁶ = 1244455297 is a prime.

Together with 1244455363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1244455363) 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, 622227680 + 622227681.

It is an arithmetic number, because the mean of its divisors is an integer number (622227681).

Almost surely, 2^1244455361 is an apocalyptic number.

It is an amenable number.

1244455361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244455361 is an equidigital number, since it uses as much as digits as its factorization.

1244455361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 35.

The square root of 1244455361 is about 35276.8388748198. The cubic root of 1244455361 is about 1075.6222425340.

Adding to 1244455361 its reverse (1635544421), we get a palindrome (2879999782).

The spelling of 1244455361 in words is "one billion, two hundred forty-four million, four hundred fifty-five thousand, three hundred sixty-one".