11863161 has 18 divisors (see below), whose sum is σ = 18206942. Its totient is φ = 7441920.

The previous prime is 11863153. The next prime is 11863171. The reversal of 11863161 is 16136811.

11863161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3825936 + 8037225 = 1956^2 + 2835^2 .

It is not a de Polignac number, because 11863161 - 2³ = 11863153 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11863121) 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 17 ways as a sum of consecutive naturals, for example, 321 + ... + 4881.

Almost surely, 2^11863161 is an apocalyptic number.

It is an amenable number.

11863161 is a deficient number, since it is larger than the sum of its proper divisors (6343781).

11863161 is a wasteful number, since it uses less digits than its factorization.

11863161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601 (or 4581 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 11863161 is about 3444.2939770002. The cubic root of 11863161 is about 228.0692887288.

Adding to 11863161 its reverse (16136811), we get a palindrome (27999972).

The spelling of 11863161 in words is "eleven million, eight hundred sixty-three thousand, one hundred sixty-one".