12194148089 has 2 divisors, whose sum is σ = 12194148090. Its totient is φ = 12194148088.

The previous prime is 12194148023. The next prime is 12194148133. The reversal of 12194148089 is 98084149121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7528165225 + 4665982864 = 86765^2 + 68308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12194148089 is a prime.

It is not a weakly prime, because it can be changed into another prime (12194148019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6097074044 + 6097074045.

It is an arithmetic number, because the mean of its divisors is an integer number (6097074045).

Almost surely, 2^12194148089 is an apocalyptic number.

It is an amenable number.

12194148089 is a deficient number, since it is larger than the sum of its proper divisors (1).

12194148089 is an equidigital number, since it uses as much as digits as its factorization.

12194148089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 47.

The spelling of 12194148089 in words is "twelve billion, one hundred ninety-four million, one hundred forty-eight thousand, eighty-nine".