196419919 has 2 divisors, whose sum is σ = 196419920. Its totient is φ = 196419918.

The previous prime is 196419917. The next prime is 196419973. The reversal of 196419919 is 919914691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196419919 - 2¹ = 196419917 is a prime.

It is a super-2 number, since 2×196419919² = 77161569159933122, which contains 22 as substring.

Together with 196419917, 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 (196419911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98209959 + 98209960.

It is an arithmetic number, because the mean of its divisors is an integer number (98209960).

Almost surely, 2^196419919 is an apocalyptic number.

196419919 is a deficient number, since it is larger than the sum of its proper divisors (1).

196419919 is an equidigital number, since it uses as much as digits as its factorization.

196419919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 49.

The square root of 196419919 is about 14014.9890831210. The cubic root of 196419919 is about 581.2931107039.

The spelling of 196419919 in words is "one hundred ninety-six million, four hundred nineteen thousand, nine hundred nineteen".