11168161 has 4 divisors (see below), whose sum is σ = 11553300. Its totient is φ = 10783024.

The previous prime is 11168149. The next prime is 11168203. The reversal of 11168161 is 16186111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16186111 = 197 ⋅82163.

It can be written as a sum of positive squares in 2 ways, for example, as 2047761 + 9120400 = 1431^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 11168161 - 2²¹ = 9071009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11168141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192526 + ... + 192583.

It is an arithmetic number, because the mean of its divisors is an integer number (2888325).

Almost surely, 2^11168161 is an apocalyptic number.

It is an amenable number.

11168161 is a deficient number, since it is larger than the sum of its proper divisors (385139).

11168161 is an equidigital number, since it uses as much as digits as its factorization.

11168161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385138.

The product of its digits is 288, while the sum is 25.

The square root of 11168161 is about 3341.8798601984. The cubic root of 11168161 is about 223.5255756674.

The spelling of 11168161 in words is "eleven million, one hundred sixty-eight thousand, one hundred sixty-one".