196619959 has 2 divisors, whose sum is σ = 196619960. Its totient is φ = 196619958.

The previous prime is 196619947. The next prime is 196619963. The reversal of 196619959 is 959916691.

It is a strong prime.

It is an emirp because it is prime and its reverse (959916691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196619959 - 2²⁷ = 62402231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196619989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98309979 + 98309980.

It is an arithmetic number, because the mean of its divisors is an integer number (98309980).

Almost surely, 2^196619959 is an apocalyptic number.

196619959 is a deficient number, since it is larger than the sum of its proper divisors (1).

196619959 is an equidigital number, since it uses as much as digits as its factorization.

196619959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1180980, while the sum is 55.

The square root of 196619959 is about 14022.1239118758. The cubic root of 196619959 is about 581.4903792595.

The spelling of 196619959 in words is "one hundred ninety-six million, six hundred nineteen thousand, nine hundred fifty-nine".