196019209 has 2 divisors, whose sum is σ = 196019210. Its totient is φ = 196019208.

The previous prime is 196019177. The next prime is 196019221. The reversal of 196019209 is 902910691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114062400 + 81956809 = 10680^2 + 9053^2 .

It is a cyclic number.

It is not a de Polignac number, because 196019209 - 2⁵ = 196019177 is a prime.

It is not a weakly prime, because it can be changed into another prime (196019279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98009604 + 98009605.

It is an arithmetic number, because the mean of its divisors is an integer number (98009605).

Almost surely, 2^196019209 is an apocalyptic number.

It is an amenable number.

196019209 is a deficient number, since it is larger than the sum of its proper divisors (1).

196019209 is an equidigital number, since it uses as much as digits as its factorization.

196019209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 196019209 is about 14000.6860189064. The cubic root of 196019209 is about 580.8975490911.

The spelling of 196019209 in words is "one hundred ninety-six million, nineteen thousand, two hundred nine".