12195286188 has 12 divisors (see below), whose sum is σ = 28455667800. Its totient is φ = 4065095392.

The previous prime is 12195286183. The next prime is 12195286267. The reversal of 12195286188 is 88168259121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12195286188.

It is not an unprimeable number, because it can be changed into a prime (12195286183) 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, 508136913 + ... + 508136936.

It is an arithmetic number, because the mean of its divisors is an integer number (2371305650).

Almost surely, 2^12195286188 is an apocalyptic number.

It is an amenable number.

12195286188 is an abundant number, since it is smaller than the sum of its proper divisors (16260381612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12195286188 is a wasteful number, since it uses less digits than its factorization.

12195286188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016273856 (or 1016273854 counting only the distinct ones).

The product of its digits is 552960, while the sum is 51.

The spelling of 12195286188 in words is "twelve billion, one hundred ninety-five million, two hundred eighty-six thousand, one hundred eighty-eight".