1244205563 has 2 divisors, whose sum is σ = 1244205564. Its totient is φ = 1244205562.

The previous prime is 1244205527. The next prime is 1244205587. The reversal of 1244205563 is 3655024421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1244205563 - 2⁸ = 1244205307 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244202563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622102781 + 622102782.

It is an arithmetic number, because the mean of its divisors is an integer number (622102782).

Almost surely, 2^1244205563 is an apocalyptic number.

1244205563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244205563 is an equidigital number, since it uses as much as digits as its factorization.

1244205563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1244205563 is about 35273.2981588056. The cubic root of 1244205563 is about 1075.5502682730.

Adding to 1244205563 its reverse (3655024421), we get a palindrome (4899229984).

The spelling of 1244205563 in words is "one billion, two hundred forty-four million, two hundred five thousand, five hundred sixty-three".