1320446263 has 2 divisors, whose sum is σ = 1320446264. Its totient is φ = 1320446262.

The previous prime is 1320446243. The next prime is 1320446297. The reversal of 1320446263 is 3626440231.

It is a weak prime.

It is an emirp because it is prime and its reverse (3626440231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320446263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320446213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660223131 + 660223132.

It is an arithmetic number, because the mean of its divisors is an integer number (660223132).

Almost surely, 2^1320446263 is an apocalyptic number.

1320446263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320446263 is an equidigital number, since it uses as much as digits as its factorization.

1320446263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 1320446263 is about 36337.9452225907. The cubic root of 1320446263 is about 1097.0849160645.

Adding to 1320446263 its reverse (3626440231), we get a palindrome (4946886494).

The spelling of 1320446263 in words is "one billion, three hundred twenty million, four hundred forty-six thousand, two hundred sixty-three".