1273797163 has 2 divisors, whose sum is σ = 1273797164. Its totient is φ = 1273797162.

The previous prime is 1273797137. The next prime is 1273797167. The reversal of 1273797163 is 3617973721.

It is a strong prime.

It is an emirp because it is prime and its reverse (3617973721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1273797163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1273797167) 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, 636898581 + 636898582.

It is an arithmetic number, because the mean of its divisors is an integer number (636898582).

Almost surely, 2^1273797163 is an apocalyptic number.

1273797163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273797163 is an equidigital number, since it uses as much as digits as its factorization.

1273797163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 333396, while the sum is 46.

The square root of 1273797163 is about 35690.2950814364. The cubic root of 1273797163 is about 1084.0103423871.

The spelling of 1273797163 in words is "one billion, two hundred seventy-three million, seven hundred ninety-seven thousand, one hundred sixty-three".