1166316161 has 8 divisors (see below), whose sum is σ = 1236346920. Its totient is φ = 1096443648.

The previous prime is 1166316103. The next prime is 1166316163. The reversal of 1166316161 is 1616136611.

It can be written as a sum of positive squares in 4 ways, for example, as 667240561 + 499075600 = 25831^2 + 22340^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166316161 - 2¹⁸ = 1166054017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166316163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24206 + ... + 54023.

It is an arithmetic number, because the mean of its divisors is an integer number (154543365).

Almost surely, 2^1166316161 is an apocalyptic number.

It is an amenable number.

1166316161 is a deficient number, since it is larger than the sum of its proper divisors (70030759).

1166316161 is an equidigital number, since it uses as much as digits as its factorization.

1166316161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79123.

The product of its digits is 3888, while the sum is 32.

The square root of 1166316161 is about 34151.3712901839. The cubic root of 1166316161 is about 1052.6211642960.

The spelling of 1166316161 in words is "one billion, one hundred sixty-six million, three hundred sixteen thousand, one hundred sixty-one".