195989885 has 16 divisors (see below), whose sum is σ = 289462656. Its totient is φ = 124054848.

The previous prime is 195989869. The next prime is 195989929. The reversal of 195989885 is 588989591.

It is a cyclic number.

It is not a de Polignac number, because 195989885 - 2⁴ = 195989869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214919 + ... + 215828.

It is an arithmetic number, because the mean of its divisors is an integer number (18091416).

Almost surely, 2^195989885 is an apocalyptic number.

It is an amenable number.

195989885 is a deficient number, since it is larger than the sum of its proper divisors (93472771).

195989885 is a wasteful number, since it uses less digits than its factorization.

195989885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430772.

The product of its digits is 9331200, while the sum is 62.

The square root of 195989885 is about 13999.6387453391. The cubic root of 195989885 is about 580.8685806900.

The spelling of 195989885 in words is "one hundred ninety-five million, nine hundred eighty-nine thousand, eight hundred eighty-five".