12168189 has 24 divisors (see below), whose sum is σ = 20186400. Its totient is φ = 6985440.

The previous prime is 12168187. The next prime is 12168223. The reversal of 12168189 is 98186121.

It is not a de Polignac number, because 12168189 - 2¹ = 12168187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12168181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1354 + ... + 5115.

It is an arithmetic number, because the mean of its divisors is an integer number (841100).

Almost surely, 2^12168189 is an apocalyptic number.

12168189 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12168189 is a deficient number, since it is larger than the sum of its proper divisors (8018211).

12168189 is a wasteful number, since it uses less digits than its factorization.

12168189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6505 (or 6502 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 12168189 is about 3488.2931356180. The cubic root of 12168189 is about 230.0074918795.

The spelling of 12168189 in words is "twelve million, one hundred sixty-eight thousand, one hundred eighty-nine".