196560913 has 2 divisors, whose sum is σ = 196560914. Its totient is φ = 196560912.

The previous prime is 196560911. The next prime is 196560943. The reversal of 196560913 is 319065691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193543744 + 3017169 = 13912^2 + 1737^2 .

It is a cyclic number.

It is not a de Polignac number, because 196560913 - 2¹ = 196560911 is a prime.

Together with 196560911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (196560911) 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, 98280456 + 98280457.

It is an arithmetic number, because the mean of its divisors is an integer number (98280457).

Almost surely, 2^196560913 is an apocalyptic number.

It is an amenable number.

196560913 is a deficient number, since it is larger than the sum of its proper divisors (1).

196560913 is an equidigital number, since it uses as much as digits as its factorization.

196560913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 196560913 is about 14020.0182952805. The cubic root of 196560913 is about 581.4321652331.

The spelling of 196560913 in words is "one hundred ninety-six million, five hundred sixty thousand, nine hundred thirteen".