1296397171 has 2 divisors, whose sum is σ = 1296397172. Its totient is φ = 1296397170.

The previous prime is 1296397129. The next prime is 1296397181. The reversal of 1296397171 is 1717936921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1296397171 - 2¹³ = 1296388979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1296397181) 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, 648198585 + 648198586.

It is an arithmetic number, because the mean of its divisors is an integer number (648198586).

Almost surely, 2^1296397171 is an apocalyptic number.

1296397171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296397171 is an equidigital number, since it uses as much as digits as its factorization.

1296397171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 46.

The square root of 1296397171 is about 36005.5158413263. The cubic root of 1296397171 is about 1090.3837189541.

The spelling of 1296397171 in words is "one billion, two hundred ninety-six million, three hundred ninety-seven thousand, one hundred seventy-one".