196609873 has 2 divisors, whose sum is σ = 196609874. Its totient is φ = 196609872.

The previous prime is 196609871. The next prime is 196609877. The reversal of 196609873 is 378906691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145515969 + 51093904 = 12063^2 + 7148^2 .

It is a cyclic number.

It is not a de Polignac number, because 196609873 - 2¹ = 196609871 is a prime.

It is a super-2 number, since 2×196609873² = 77310884322152258, which contains 22 as substring.

Together with 196609871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (196609871) 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, 98304936 + 98304937.

It is an arithmetic number, because the mean of its divisors is an integer number (98304937).

Almost surely, 2^196609873 is an apocalyptic number.

It is an amenable number.

196609873 is a deficient number, since it is larger than the sum of its proper divisors (1).

196609873 is an equidigital number, since it uses as much as digits as its factorization.

196609873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 196609873 is about 14021.7642613189. The cubic root of 196609873 is about 581.4804361994.

The spelling of 196609873 in words is "one hundred ninety-six million, six hundred nine thousand, eight hundred seventy-three".