12194645 has 16 divisors (see below), whose sum is σ = 15554160. Its totient is φ = 9160704.

The previous prime is 12194641. The next prime is 12194647. The reversal of 12194645 is 54649121.

12194645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1787569 + 10407076 = 1337^2 + 3226^2 .

It is a cyclic number.

It is not a de Polignac number, because 12194645 - 2² = 12194641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12194641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4229 + ... + 6501.

It is an arithmetic number, because the mean of its divisors is an integer number (972135).

It is the magic constant of a 290 × 290 magic square.

Almost surely, 2^12194645 is an apocalyptic number.

It is an amenable number.

12194645 is a deficient number, since it is larger than the sum of its proper divisors (3359515).

12194645 is a wasteful number, since it uses less digits than its factorization.

12194645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344.

The product of its digits is 8640, while the sum is 32.

The square root of 12194645 is about 3492.0831891580. The cubic root of 12194645 is about 230.1740648312.

The spelling of 12194645 in words is "twelve million, one hundred ninety-four thousand, six hundred forty-five".