12189947186 has 8 divisors (see below), whose sum is σ = 18297221760. Its totient is φ = 6090873268.

The previous prime is 12189947179. The next prime is 12189947197. The reversal of 12189947186 is 68174998121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2046446 + ... + 2052393.

It is an arithmetic number, because the mean of its divisors is an integer number (2287152720).

Almost surely, 2^12189947186 is an apocalyptic number.

12189947186 is a deficient number, since it is larger than the sum of its proper divisors (6107274574).

12189947186 is a wasteful number, since it uses less digits than its factorization.

12189947186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100328.

The product of its digits is 1741824, while the sum is 56.

The spelling of 12189947186 in words is "twelve billion, one hundred eighty-nine million, nine hundred forty-seven thousand, one hundred eighty-six".