195874219 has 2 divisors, whose sum is σ = 195874220. Its totient is φ = 195874218.

The previous prime is 195874201. The next prime is 195874223. The reversal of 195874219 is 912478591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195874219 - 2⁹ = 195873707 is a prime.

It is a super-2 number, since 2×195874219² = 76733419337719922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195874519) 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, 97937109 + 97937110.

It is an arithmetic number, because the mean of its divisors is an integer number (97937110).

Almost surely, 2^195874219 is an apocalyptic number.

195874219 is a deficient number, since it is larger than the sum of its proper divisors (1).

195874219 is an equidigital number, since it uses as much as digits as its factorization.

195874219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 46.

The square root of 195874219 is about 13995.5071004948. The cubic root of 195874219 is about 580.7542891342.

The spelling of 195874219 in words is "one hundred ninety-five million, eight hundred seventy-four thousand, two hundred nineteen".