1296481171 has 2 divisors, whose sum is σ = 1296481172. Its totient is φ = 1296481170.

The previous prime is 1296481159. The next prime is 1296481189. The reversal of 1296481171 is 1711846921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1296481171 - 2²⁵ = 1262926739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1296481111) 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, 648240585 + 648240586.

It is an arithmetic number, because the mean of its divisors is an integer number (648240586).

Almost surely, 2^1296481171 is an apocalyptic number.

1296481171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296481171 is an equidigital number, since it uses as much as digits as its factorization.

1296481171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 40.

The square root of 1296481171 is about 36006.6823103712. The cubic root of 1296481171 is about 1090.4072689011.

The spelling of 1296481171 in words is "one billion, two hundred ninety-six million, four hundred eighty-one thousand, one hundred seventy-one".