195268257 has 12 divisors (see below), whose sum is σ = 283745280. Its totient is φ = 129398328.

The previous prime is 195268243. The next prime is 195268267. The reversal of 195268257 is 752862591.

195268257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 195268257 - 2¹⁴ = 195251873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195268267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63457 + ... + 66462.

It is an arithmetic number, because the mean of its divisors is an integer number (23645440).

Almost surely, 2^195268257 is an apocalyptic number.

It is an amenable number.

195268257 is a deficient number, since it is larger than the sum of its proper divisors (88477023).

195268257 is a wasteful number, since it uses less digits than its factorization.

195268257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130092 (or 130089 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 195268257 is about 13973.8418840346. The cubic root of 195268257 is about 580.1547912260.

The spelling of 195268257 in words is "one hundred ninety-five million, two hundred sixty-eight thousand, two hundred fifty-seven".