195065865 has 12 divisors (see below), whose sum is σ = 338114244. Its totient is φ = 104035104.

The previous prime is 195065863. The next prime is 195065879. The reversal of 195065865 is 568560591.

It is a happy number.

195065865 is a `hidden beast` number, since 19 + 50 + 6 + 586 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 86322681 + 108743184 = 9291^2 + 10428^2 .

It is not a de Polignac number, because 195065865 - 2¹ = 195065863 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4334797 = 195065865 / (1 + 9 + 5 + 0 + 6 + 5 + 8 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 195065865.

It is not an unprimeable number, because it can be changed into a prime (195065863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2167354 + ... + 2167443.

It is an arithmetic number, because the mean of its divisors is an integer number (28176187).

Almost surely, 2^195065865 is an apocalyptic number.

195065865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

195065865 is a deficient number, since it is larger than the sum of its proper divisors (143048379).

195065865 is a wasteful number, since it uses less digits than its factorization.

195065865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334808 (or 4334805 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 195065865 is about 13966.5981899674. The cubic root of 195065865 is about 579.9542819691.

The spelling of 195065865 in words is "one hundred ninety-five million, sixty-five thousand, eight hundred sixty-five".