1159608809 has 2 divisors, whose sum is σ = 1159608810. Its totient is φ = 1159608808.

The previous prime is 1159608773. The next prime is 1159608839. The reversal of 1159608809 is 9088069511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766459225 + 393149584 = 27685^2 + 19828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1159608809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1159608839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579804404 + 579804405.

It is an arithmetic number, because the mean of its divisors is an integer number (579804405).

Almost surely, 2^1159608809 is an apocalyptic number.

It is an amenable number.

1159608809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1159608809 is an equidigital number, since it uses as much as digits as its factorization.

1159608809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 1159608809 is about 34053.0293659757. The cubic root of 1159608809 is about 1050.5994487883.

The spelling of 1159608809 in words is "one billion, one hundred fifty-nine million, six hundred eight thousand, eight hundred nine".