12136189 has 4 divisors (see below), whose sum is σ = 13069756. Its totient is φ = 11202624.

The previous prime is 12136171. The next prime is 12136211. The reversal of 12136189 is 98163121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1625625 + 10510564 = 1275^2 + 3242^2 .

It is a cyclic number.

It is not a de Polignac number, because 12136189 - 2⁹ = 12135677 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 12136189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12136489) 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, 466764 + ... + 466789.

It is an arithmetic number, because the mean of its divisors is an integer number (3267439).

Almost surely, 2^12136189 is an apocalyptic number.

It is an amenable number.

12136189 is a deficient number, since it is larger than the sum of its proper divisors (933567).

12136189 is an equidigital number, since it uses as much as digits as its factorization.

12136189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933566.

The product of its digits is 2592, while the sum is 31.

The square root of 12136189 is about 3483.7033455792. The cubic root of 12136189 is about 229.8056896998.

The spelling of 12136189 in words is "twelve million, one hundred thirty-six thousand, one hundred eighty-nine".