195073819 has 2 divisors, whose sum is σ = 195073820. Its totient is φ = 195073818.

The previous prime is 195073811. The next prime is 195073841. The reversal of 195073819 is 918370591.

195073819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195073819 - 2³ = 195073811 is a prime.

It is a super-2 number, since 2×195073819² = 76107589718489522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195073811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97536909 + 97536910.

It is an arithmetic number, because the mean of its divisors is an integer number (97536910).

Almost surely, 2^195073819 is an apocalyptic number.

195073819 is a deficient number, since it is larger than the sum of its proper divisors (1).

195073819 is an equidigital number, since it uses as much as digits as its factorization.

195073819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 195073819 is about 13966.8829378641. The cubic root of 195073819 is about 579.9621645949.

The spelling of 195073819 in words is "one hundred ninety-five million, seventy-three thousand, eight hundred nineteen".