12185149 has 4 divisors (see below), whose sum is σ = 12195136. Its totient is φ = 12175164.

The previous prime is 12185123. The next prime is 12185171. The reversal of 12185149 is 94158121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12185149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12185149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12185119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2859 + ... + 5704.

It is an arithmetic number, because the mean of its divisors is an integer number (3048784).

Almost surely, 2^12185149 is an apocalyptic number.

It is an amenable number.

12185149 is a deficient number, since it is larger than the sum of its proper divisors (9987).

12185149 is an equidigital number, since it uses as much as digits as its factorization.

12185149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9986.

The product of its digits is 2880, while the sum is 31.

The square root of 12185149 is about 3490.7232774885. The cubic root of 12185149 is about 230.1143036133.

The spelling of 12185149 in words is "twelve million, one hundred eighty-five thousand, one hundred forty-nine".