196868911 has 2 divisors, whose sum is σ = 196868912. Its totient is φ = 196868910.

The previous prime is 196868887. The next prime is 196868927. The reversal of 196868911 is 119868691.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (119868691) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 116898961 and 169898611.

It is a cyclic number.

It is not a de Polignac number, because 196868911 - 2¹¹ = 196866863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196838911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98434455 + 98434456.

It is an arithmetic number, because the mean of its divisors is an integer number (98434456).

Almost surely, 2^196868911 is an apocalyptic number.

196868911 is a deficient number, since it is larger than the sum of its proper divisors (1).

196868911 is an equidigital number, since it uses as much as digits as its factorization.

196868911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 49.

The square root of 196868911 is about 14030.9982182309. The cubic root of 196868911 is about 581.7356953825.

The spelling of 196868911 in words is "one hundred ninety-six million, eight hundred sixty-eight thousand, nine hundred eleven".