195985798 has 16 divisors (see below), whose sum is σ = 309806640. Its totient is φ = 92728800.

The previous prime is 195985793. The next prime is 195985837. The reversal of 195985798 is 897589591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195985793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37888 + ... + 42748.

It is an arithmetic number, because the mean of its divisors is an integer number (19362915).

Almost surely, 2^195985798 is an apocalyptic number.

195985798 is a deficient number, since it is larger than the sum of its proper divisors (113820842).

195985798 is a wasteful number, since it uses less digits than its factorization.

195985798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5943.

The product of its digits is 8164800, while the sum is 61.

The square root of 195985798 is about 13999.4927765259. The cubic root of 195985798 is about 580.8645430217.

The spelling of 195985798 in words is "one hundred ninety-five million, nine hundred eighty-five thousand, seven hundred ninety-eight".