1161330817 has 4 divisors (see below), whose sum is σ = 1164621060. Its totient is φ = 1158040576.

The previous prime is 1161330811. The next prime is 1161330847. The reversal of 1161330817 is 7180331611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 874739776 + 286591041 = 29576^2 + 16929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161330817 - 2¹⁵ = 1161298049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161330811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644592 + ... + 1645297.

It is an arithmetic number, because the mean of its divisors is an integer number (291155265).

Almost surely, 2^1161330817 is an apocalyptic number.

It is an amenable number.

1161330817 is a deficient number, since it is larger than the sum of its proper divisors (3290243).

1161330817 is an equidigital number, since it uses as much as digits as its factorization.

1161330817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290242.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1161330817 is about 34078.3041978324. The cubic root of 1161330817 is about 1051.1192349612.

The spelling of 1161330817 in words is "one billion, one hundred sixty-one million, three hundred thirty thousand, eight hundred seventeen".