1159606809 has 9 divisors (see below), whose sum is σ = 1675135189. Its totient is φ = 773003100.

The previous prime is 1159606807. The next prime is 1159606831. The reversal of 1159606809 is 9086069511.

The square root of 1159606809 is 34053.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1159606809 - 2¹ = 1159606807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1159606807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 96484 + ... + 107834.

Almost surely, 2^1159606809 is an apocalyptic number.

1159606809 is the 34053-rd square number.

1159606809 is the 17027-th centered octagonal number.

It is an amenable number.

1159606809 is a deficient number, since it is larger than the sum of its proper divisors (515528380).

1159606809 is an frugal number, since it uses more digits than its factorization.

1159606809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22708 (or 11354 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The cubic root of 1159606809 is about 1050.5988447915.

The spelling of 1159606809 in words is "one billion, one hundred fifty-nine million, six hundred six thousand, eight hundred nine".