195639268 has 12 divisors (see below), whose sum is σ = 373493232. Its totient is φ = 88926920.

The previous prime is 195639253. The next prime is 195639317. The reversal of 195639268 is 862936591.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2223130 + ... + 2223217.

It is an arithmetic number, because the mean of its divisors is an integer number (31124436).

Almost surely, 2^195639268 is an apocalyptic number.

It is an amenable number.

195639268 is a deficient number, since it is larger than the sum of its proper divisors (177853964).

195639268 is a wasteful number, since it uses less digits than its factorization.

195639268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446362 (or 4446360 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The square root of 195639268 is about 13987.1107810012. The cubic root of 195639268 is about 580.5219914300.

The spelling of 195639268 in words is "one hundred ninety-five million, six hundred thirty-nine thousand, two hundred sixty-eight".