195173873 has 2 divisors, whose sum is σ = 195173874. Its totient is φ = 195173872.

The previous prime is 195173863. The next prime is 195173879. The reversal of 195173873 is 378371591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143233024 + 51940849 = 11968^2 + 7207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195173873 is a prime.

It is not a weakly prime, because it can be changed into another prime (195173879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97586936 + 97586937.

It is an arithmetic number, because the mean of its divisors is an integer number (97586937).

Almost surely, 2^195173873 is an apocalyptic number.

It is an amenable number.

195173873 is a deficient number, since it is larger than the sum of its proper divisors (1).

195173873 is an equidigital number, since it uses as much as digits as its factorization.

195173873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 195173873 is about 13970.4643086764. The cubic root of 195173873 is about 580.0613024781.

The spelling of 195173873 in words is "one hundred ninety-five million, one hundred seventy-three thousand, eight hundred seventy-three".