11861185 has 12 divisors (see below), whose sum is σ = 16557588. Its totient is φ = 8133216.

The previous prime is 11861167. The next prime is 11861191. The reversal of 11861185 is 58116811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4293184 + 7568001 = 2072^2 + 2751^2 .

It is not a de Polignac number, because 11861185 - 2¹¹ = 11859137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23962 + ... + 24451.

It is an arithmetic number, because the mean of its divisors is an integer number (1379799).

Almost surely, 2^11861185 is an apocalyptic number.

It is an amenable number.

11861185 is a deficient number, since it is larger than the sum of its proper divisors (4696403).

11861185 is an equidigital number, since it uses as much as digits as its factorization.

11861185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48432 (or 48425 counting only the distinct ones).

The product of its digits is 1920, while the sum is 31.

The square root of 11861185 is about 3444.0071138138. The cubic root of 11861185 is about 228.0566251580.

Adding to 11861185 its reverse (58116811), we get a palindrome (69977996).

The spelling of 11861185 in words is "eleven million, eight hundred sixty-one thousand, one hundred eighty-five".