1296863159 has 2 divisors, whose sum is σ = 1296863160. Its totient is φ = 1296863158.

The previous prime is 1296863149. The next prime is 1296863171. The reversal of 1296863159 is 9513686921.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9513686921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1296863159 - 2¹² = 1296859063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1296863149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648431579 + 648431580.

It is an arithmetic number, because the mean of its divisors is an integer number (648431580).

Almost surely, 2^1296863159 is an apocalyptic number.

1296863159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296863159 is an equidigital number, since it uses as much as digits as its factorization.

1296863159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 50.

The square root of 1296863159 is about 36011.9863240005. The cubic root of 1296863159 is about 1090.5143488959.

The spelling of 1296863159 in words is "one billion, two hundred ninety-six million, eight hundred sixty-three thousand, one hundred fifty-nine".