195319 has 2 divisors, whose sum is σ = 195320. Its totient is φ = 195318.

The previous prime is 195311. The next prime is 195329. The reversal of 195319 is 913591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195319 - 2³ = 195311 is a prime.

It is a super-2 number, since 2×195319² = 76299023522, which contains 22 as substring.

It is a plaindrome in base 5.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97659 + 97660.

It is an arithmetic number, because the mean of its divisors is an integer number (97660).

2¹⁹⁵³¹⁹ is an apocalyptic number.

195319 is a deficient number, since it is larger than the sum of its proper divisors (1).

195319 is an equidigital number, since it uses as much as digits as its factorization.

195319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1215, while the sum is 28.

The square root of 195319 is about 441.9490920909. The cubic root of 195319 is about 58.0205040467.

The spelling of 195319 in words is "one hundred ninety-five thousand, three hundred nineteen".