11644163 has 4 divisors (see below), whose sum is σ = 11652240. Its totient is φ = 11636088.

The previous prime is 11644117. The next prime is 11644211. The reversal of 11644163 is 36144611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11644163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11644103) 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, 1220 + ... + 4977.

It is an arithmetic number, because the mean of its divisors is an integer number (2913060).

Almost surely, 2^11644163 is an apocalyptic number.

11644163 is a deficient number, since it is larger than the sum of its proper divisors (8077).

11644163 is an equidigital number, since it uses as much as digits as its factorization.

11644163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8076.

The product of its digits is 1728, while the sum is 26.

The square root of 11644163 is about 3412.3544657611. The cubic root of 11644163 is about 226.6571509365.

Adding to 11644163 its reverse (36144611), we get a palindrome (47788774).

The spelling of 11644163 in words is "eleven million, six hundred forty-four thousand, one hundred sixty-three".