1291659059 has 2 divisors, whose sum is σ = 1291659060. Its totient is φ = 1291659058.

The previous prime is 1291659053. The next prime is 1291659071. The reversal of 1291659059 is 9509561921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1291659059 - 2²⁰ = 1290610483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1291659053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645829529 + 645829530.

It is an arithmetic number, because the mean of its divisors is an integer number (645829530).

Almost surely, 2^1291659059 is an apocalyptic number.

1291659059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291659059 is an equidigital number, since it uses as much as digits as its factorization.

1291659059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 218700, while the sum is 47.

The square root of 1291659059 is about 35939.6585821290. The cubic root of 1291659059 is about 1089.0537080677.

The spelling of 1291659059 in words is "one billion, two hundred ninety-one million, six hundred fifty-nine thousand, fifty-nine".