196883891 has 2 divisors, whose sum is σ = 196883892. Its totient is φ = 196883890.

The previous prime is 196883867. The next prime is 196883941. The reversal of 196883891 is 198388691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196883891 - 2²² = 192689587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (196883191) 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, 98441945 + 98441946.

It is an arithmetic number, because the mean of its divisors is an integer number (98441946).

Almost surely, 2^196883891 is an apocalyptic number.

196883891 is a deficient number, since it is larger than the sum of its proper divisors (1).

196883891 is an equidigital number, since it uses as much as digits as its factorization.

196883891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 53.

The square root of 196883891 is about 14031.5320261189. The cubic root of 196883891 is about 581.7504500056.

The spelling of 196883891 in words is "one hundred ninety-six million, eight hundred eighty-three thousand, eight hundred ninety-one".