12185938 has 8 divisors (see below), whose sum is σ = 18724860. Its totient is φ = 5944320.

The previous prime is 12185917. The next prime is 12185941. The reversal of 12185938 is 83958121.

It can be written as a sum of positive squares in 2 ways, for example, as 10738729 + 1447209 = 3277^2 + 1203^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12185897 and 12185906.

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 3 ways as a sum of consecutive naturals, for example, 74223 + ... + 74386.

Almost surely, 2^12185938 is an apocalyptic number.

12185938 is a deficient number, since it is larger than the sum of its proper divisors (6538922).

12185938 is a wasteful number, since it uses less digits than its factorization.

12185938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148652.

The product of its digits is 17280, while the sum is 37.

The square root of 12185938 is about 3490.8362894871. The cubic root of 12185938 is about 230.1192702129.

The spelling of 12185938 in words is "twelve million, one hundred eighty-five thousand, nine hundred thirty-eight".