196818373 has 2 divisors, whose sum is σ = 196818374. Its totient is φ = 196818372.

The previous prime is 196818371. The next prime is 196818379. The reversal of 196818373 is 373818691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151363809 + 45454564 = 12303^2 + 6742^2 .

It is a cyclic number.

It is not a de Polignac number, because 196818373 - 2¹ = 196818371 is a prime.

Together with 196818371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196818371) 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, 98409186 + 98409187.

It is an arithmetic number, because the mean of its divisors is an integer number (98409187).

Almost surely, 2^196818373 is an apocalyptic number.

It is an amenable number.

196818373 is a deficient number, since it is larger than the sum of its proper divisors (1).

196818373 is an equidigital number, since it uses as much as digits as its factorization.

196818373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 196818373 is about 14029.1971616340. The cubic root of 196818373 is about 581.6859122138.

The spelling of 196818373 in words is "one hundred ninety-six million, eight hundred eighteen thousand, three hundred seventy-three".