12191794 has 16 divisors (see below), whose sum is σ = 19268928. Its totient is φ = 5774032.

The previous prime is 12191783. The next prime is 12191797. The reversal of 12191794 is 49719121.

It is not an unprimeable number, because it can be changed into a prime (12191797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3684 + ... + 6160.

It is an arithmetic number, because the mean of its divisors is an integer number (1204308).

Almost surely, 2^12191794 is an apocalyptic number.

12191794 is a deficient number, since it is larger than the sum of its proper divisors (7077134).

12191794 is a wasteful number, since it uses less digits than its factorization.

12191794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609.

The product of its digits is 4536, while the sum is 34.

The square root of 12191794 is about 3491.6749562352. The cubic root of 12191794 is about 230.1561258806.

The spelling of 12191794 in words is "twelve million, one hundred ninety-one thousand, seven hundred ninety-four".