20196346189 has 2 divisors, whose sum is σ = 20196346190. Its totient is φ = 20196346188.

The previous prime is 20196346099. The next prime is 20196346211. The reversal of 20196346189 is 98164369102.

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., 12676508100 + 7519838089 = 112590^2 + 86717^2 .

It is a cyclic number.

It is not a de Polignac number, because 20196346189 - 2¹⁹ = 20195821901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20196347189) 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 as a sum of consecutive naturals, namely, 10098173094 + 10098173095.

It is an arithmetic number, because the mean of its divisors is an integer number (10098173095).

Almost surely, 2^20196346189 is an apocalyptic number.

It is an amenable number.

20196346189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20196346189 is an equidigital number, since it uses as much as digits as its factorization.

20196346189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 20196346189 in words is "twenty billion, one hundred ninety-six million, three hundred forty-six thousand, one hundred eighty-nine".