1272118163 has 2 divisors, whose sum is σ = 1272118164. Its totient is φ = 1272118162.

The previous prime is 1272118157. The next prime is 1272118189. The reversal of 1272118163 is 3618112721.

It is a weak prime.

It is an emirp because it is prime and its reverse (3618112721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1272118163 - 2⁸ = 1272117907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1272118103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636059081 + 636059082.

It is an arithmetic number, because the mean of its divisors is an integer number (636059082).

Almost surely, 2^1272118163 is an apocalyptic number.

1272118163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272118163 is an equidigital number, since it uses as much as digits as its factorization.

1272118163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 1272118163 is about 35666.7655247851. The cubic root of 1272118163 is about 1083.5338527025.

The spelling of 1272118163 in words is "one billion, two hundred seventy-two million, one hundred eighteen thousand, one hundred sixty-three".