195439205 has 12 divisors (see below), whose sum is σ = 253956420. Its totient is φ = 144323712.

The previous prime is 195439193. The next prime is 195439219. The reversal of 195439205 is 502934591.

195439205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 72982849 + 122456356 = 8543^2 + 11066^2 .

It is not a de Polignac number, because 195439205 - 2⁸ = 195438949 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114800 + ... + 116489.

It is an arithmetic number, because the mean of its divisors is an integer number (21163035).

Almost surely, 2^195439205 is an apocalyptic number.

It is an amenable number.

195439205 is a deficient number, since it is larger than the sum of its proper divisors (58517215).

195439205 is a wasteful number, since it uses less digits than its factorization.

195439205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231320 (or 231307 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 195439205 is about 13979.9572603066. The cubic root of 195439205 is about 580.3240410834.

The spelling of 195439205 in words is "one hundred ninety-five million, four hundred thirty-nine thousand, two hundred five".