12185345 has 8 divisors (see below), whose sum is σ = 15482664. Its totient is φ = 9174784.

The previous prime is 12185339. The next prime is 12185351. The reversal of 12185345 is 54358121.

12185345 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12185339) and next prime (12185351).

It can be written as a sum of positive squares in 4 ways, for example, as 5125696 + 7059649 = 2264^2 + 2657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12185345 - 2¹² = 12181249 is a prime.

It is a Duffinian number.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 71594 + ... + 71763.

It is an arithmetic number, because the mean of its divisors is an integer number (1935333).

Almost surely, 2^12185345 is an apocalyptic number.

It is an amenable number.

12185345 is a deficient number, since it is larger than the sum of its proper divisors (3297319).

12185345 is a wasteful number, since it uses less digits than its factorization.

12185345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143379.

The product of its digits is 4800, while the sum is 29.

The square root of 12185345 is about 3490.7513517866. The cubic root of 12185345 is about 230.1155374147.

The spelling of 12185345 in words is "twelve million, one hundred eighty-five thousand, three hundred forty-five".