196085609 has 2 divisors, whose sum is σ = 196085610. Its totient is φ = 196085608.

The previous prime is 196085579. The next prime is 196085627. The reversal of 196085609 is 906580691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196084009 + 1600 = 14003^2 + 40^2 .

It is an emirp because it is prime and its reverse (906580691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196085609 - 2¹² = 196081513 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 196085609.

It is not a weakly prime, because it can be changed into another prime (196085629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98042804 + 98042805.

It is an arithmetic number, because the mean of its divisors is an integer number (98042805).

Almost surely, 2^196085609 is an apocalyptic number.

It is an amenable number.

196085609 is a deficient number, since it is larger than the sum of its proper divisors (1).

196085609 is an equidigital number, since it uses as much as digits as its factorization.

196085609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 196085609 is about 14003.0571304983. The cubic root of 196085609 is about 580.9631332125.

The spelling of 196085609 in words is "one hundred ninety-six million, eighty-five thousand, six hundred nine".