1296168091 has 2 divisors, whose sum is σ = 1296168092. Its totient is φ = 1296168090.

The previous prime is 1296168061. The next prime is 1296168169. The reversal of 1296168091 is 1908616921.

It is a weak prime.

It is an emirp because it is prime and its reverse (1908616921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1296168091 - 2¹³ = 1296159899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1296168061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648084045 + 648084046.

It is an arithmetic number, because the mean of its divisors is an integer number (648084046).

Almost surely, 2^1296168091 is an apocalyptic number.

1296168091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296168091 is an equidigital number, since it uses as much as digits as its factorization.

1296168091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1296168091 is about 36002.3345215279. The cubic root of 1296168091 is about 1090.3194897137.

The spelling of 1296168091 in words is "one billion, two hundred ninety-six million, one hundred sixty-eight thousand, ninety-one".