195266289 has 8 divisors (see below), whose sum is σ = 260426880. Its totient is φ = 130141616.

The previous prime is 195266273. The next prime is 195266299. The reversal of 195266289 is 982662591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195266289 - 2⁴ = 195266273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195266299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8659 + ... + 21575.

It is an arithmetic number, because the mean of its divisors is an integer number (32553360).

Almost surely, 2^195266289 is an apocalyptic number.

It is an amenable number.

195266289 is a deficient number, since it is larger than the sum of its proper divisors (65160591).

195266289 is a wasteful number, since it uses less digits than its factorization.

195266289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17959.

The product of its digits is 466560, while the sum is 48.

The square root of 195266289 is about 13973.7714665727. The cubic root of 195266289 is about 580.1528422005.

The spelling of 195266289 in words is "one hundred ninety-five million, two hundred sixty-six thousand, two hundred eighty-nine".