196745851 has 2 divisors, whose sum is σ = 196745852. Its totient is φ = 196745850.

The previous prime is 196745833. The next prime is 196745863. The reversal of 196745851 is 158547691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 196745851 - 2⁵ = 196745819 is a prime.

It is not a weakly prime, because it can be changed into another prime (196745891) 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, 98372925 + 98372926.

It is an arithmetic number, because the mean of its divisors is an integer number (98372926).

Almost surely, 2^196745851 is an apocalyptic number.

196745851 is a deficient number, since it is larger than the sum of its proper divisors (1).

196745851 is an equidigital number, since it uses as much as digits as its factorization.

196745851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 46.

The square root of 196745851 is about 14026.6122424483. The cubic root of 196745851 is about 581.6144585050.

The spelling of 196745851 in words is "one hundred ninety-six million, seven hundred forty-five thousand, eight hundred fifty-one".