195853873 has 2 divisors, whose sum is σ = 195853874. Its totient is φ = 195853872.

The previous prime is 195853837. The next prime is 195853927. The reversal of 195853873 is 378358591.

Together with previous prime (195853837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185722384 + 10131489 = 13628^2 + 3183^2 .

It is a cyclic number.

It is not a de Polignac number, because 195853873 - 2¹³ = 195845681 is a prime.

It is not a weakly prime, because it can be changed into another prime (195853373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97926936 + 97926937.

It is an arithmetic number, because the mean of its divisors is an integer number (97926937).

Almost surely, 2^195853873 is an apocalyptic number.

It is an amenable number.

195853873 is a deficient number, since it is larger than the sum of its proper divisors (1).

195853873 is an equidigital number, since it uses as much as digits as its factorization.

195853873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 49.

The square root of 195853873 is about 13994.7802054909. The cubic root of 195853873 is about 580.7341802500.

The spelling of 195853873 in words is "one hundred ninety-five million, eight hundred fifty-three thousand, eight hundred seventy-three".