11642161 has 16 divisors (see below), whose sum is σ = 12870144. Its totient is φ = 10485504.

The previous prime is 11642159. The next prime is 11642167. The reversal of 11642161 is 16124611.

It is not a de Polignac number, because 11642161 - 2¹ = 11642159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11642167) 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 15 ways as a sum of consecutive naturals, for example, 52096 + ... + 52318.

It is an arithmetic number, because the mean of its divisors is an integer number (804384).

Almost surely, 2^11642161 is an apocalyptic number.

It is an amenable number.

11642161 is a deficient number, since it is larger than the sum of its proper divisors (1227983).

11642161 is a wasteful number, since it uses less digits than its factorization.

11642161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360.

The product of its digits is 288, while the sum is 22.

The square root of 11642161 is about 3412.0611073074. The cubic root of 11642161 is about 226.6441603471.

Adding to 11642161 its reverse (16124611), we get a palindrome (27766772).

The spelling of 11642161 in words is "eleven million, six hundred forty-two thousand, one hundred sixty-one".