195938593 has 4 divisors (see below), whose sum is σ = 196058500. Its totient is φ = 195818688.

The previous prime is 195938581. The next prime is 195938597. The reversal of 195938593 is 395839591.

It is a happy number.

195938593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50808384 + 145130209 = 7128^2 + 12047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195938593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195938593.

It is not an unprimeable number, because it can be changed into a prime (195938597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57468 + ... + 60781.

It is an arithmetic number, because the mean of its divisors is an integer number (49014625).

Almost surely, 2^195938593 is an apocalyptic number.

It is an amenable number.

195938593 is a deficient number, since it is larger than the sum of its proper divisors (119907).

195938593 is a wasteful number, since it uses less digits than its factorization.

195938593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119906.

The product of its digits is 1312200, while the sum is 52.

The square root of 195938593 is about 13997.8067210546. The cubic root of 195938593 is about 580.8179037367.

The spelling of 195938593 in words is "one hundred ninety-five million, nine hundred thirty-eight thousand, five hundred ninety-three".