1275916163 has 2 divisors, whose sum is σ = 1275916164. Its totient is φ = 1275916162.

The previous prime is 1275916157. The next prime is 1275916171. The reversal of 1275916163 is 3616195721.

It is a weak prime.

It is an emirp because it is prime and its reverse (3616195721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1275916163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1275916163.

It is not a weakly prime, because it can be changed into another prime (1275916183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637958081 + 637958082.

It is an arithmetic number, because the mean of its divisors is an integer number (637958082).

Almost surely, 2^1275916163 is an apocalyptic number.

1275916163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275916163 is an equidigital number, since it uses as much as digits as its factorization.

1275916163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 1275916163 is about 35719.9686869964. The cubic root of 1275916163 is about 1084.6111040150.

The spelling of 1275916163 in words is "one billion, two hundred seventy-five million, nine hundred sixteen thousand, one hundred sixty-three".