195689904 has 40 divisors (see below), whose sum is σ = 517294272. Its totient is φ = 63712320.

The previous prime is 195689903. The next prime is 195689917. The reversal of 195689904 is 409986591.

It is not an unprimeable number, because it can be changed into a prime (195689903) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 45342 + ... + 49469.

Almost surely, 2^195689904 is an apocalyptic number.

It is an amenable number.

195689904 is an abundant number, since it is smaller than the sum of its proper divisors (321604368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195689904 is a wasteful number, since it uses less digits than its factorization.

195689904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94865 (or 94859 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 195689904 is about 13988.9207589435. The cubic root of 195689904 is about 580.5720713146.

The spelling of 195689904 in words is "one hundred ninety-five million, six hundred eighty-nine thousand, nine hundred four".