11840161 has 4 divisors (see below), whose sum is σ = 12034324. Its totient is φ = 11646000.

The previous prime is 11840131. The next prime is 11840167. The reversal of 11840161 is 16104811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16104811 = 1753 ⋅9187.

It can be written as a sum of positive squares in 2 ways, for example, as 490000 + 11350161 = 700^2 + 3369^2 .

It is a cyclic number.

It is not a de Polignac number, because 11840161 - 2¹³ = 11831969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11840167) 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, 96990 + ... + 97111.

It is an arithmetic number, because the mean of its divisors is an integer number (3008581).

Almost surely, 2^11840161 is an apocalyptic number.

It is an amenable number.

11840161 is a deficient number, since it is larger than the sum of its proper divisors (194163).

11840161 is an equidigital number, since it uses as much as digits as its factorization.

11840161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194162.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 11840161 is about 3440.9535015748. The cubic root of 11840161 is about 227.9218016943.

Adding to 11840161 its reverse (16104811), we get a palindrome (27944972).

The spelling of 11840161 in words is "eleven million, eight hundred forty thousand, one hundred sixty-one".