12196171989 has 12 divisors (see below), whose sum is σ = 17619329676. Its totient is φ = 8129564352.

The previous prime is 12196171913. The next prime is 12196172003. The reversal of 12196171989 is 98917169121.

12196171989 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 617 + 19 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5676416964 + 6519755025 = 75342^2 + 80745^2 .

It is not a de Polignac number, because 12196171989 - 2¹⁹ = 12195647701 is a prime.

It is a super-2 number, since 2×12196171989² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12196171289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35704 + ... + 160209.

It is an arithmetic number, because the mean of its divisors is an integer number (1468277473).

Almost surely, 2^12196171989 is an apocalyptic number.

It is an amenable number.

12196171989 is a deficient number, since it is larger than the sum of its proper divisors (5423157687).

12196171989 is a wasteful number, since it uses less digits than its factorization.

12196171989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202836 (or 202833 counting only the distinct ones).

The product of its digits is 489888, while the sum is 54.

The spelling of 12196171989 in words is "twelve billion, one hundred ninety-six million, one hundred seventy-one thousand, nine hundred eighty-nine".