196818371 has 2 divisors, whose sum is σ = 196818372. Its totient is φ = 196818370.

The previous prime is 196818317. The next prime is 196818373. The reversal of 196818371 is 173818691.

Together with previous prime (196818317) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 196818371 - 2¹⁴ = 196801987 is a prime.

Together with 196818373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (196818373) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98409185 + 98409186.

It is an arithmetic number, because the mean of its divisors is an integer number (98409186).

Almost surely, 2^196818371 is an apocalyptic number.

196818371 is a deficient number, since it is larger than the sum of its proper divisors (1).

196818371 is an equidigital number, since it uses as much as digits as its factorization.

196818371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The square root of 196818371 is about 14029.1970903541. The cubic root of 196818371 is about 581.6859102435.

The spelling of 196818371 in words is "one hundred ninety-six million, eight hundred eighteen thousand, three hundred seventy-one".