196805573 has 2 divisors, whose sum is σ = 196805574. Its totient is φ = 196805572.

The previous prime is 196805563. The next prime is 196805579. The reversal of 196805573 is 375508691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164916964 + 31888609 = 12842^2 + 5647^2 .

It is an emirp because it is prime and its reverse (375508691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196805573 - 2⁶ = 196805509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196805579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98402786 + 98402787.

It is an arithmetic number, because the mean of its divisors is an integer number (98402787).

Almost surely, 2^196805573 is an apocalyptic number.

It is an amenable number.

196805573 is a deficient number, since it is larger than the sum of its proper divisors (1).

196805573 is an equidigital number, since it uses as much as digits as its factorization.

196805573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 196805573 is about 14028.7409627521. The cubic root of 196805573 is about 581.6733020410.

The spelling of 196805573 in words is "one hundred ninety-six million, eight hundred five thousand, five hundred seventy-three".