194811968 has 28 divisors (see below), whose sum is σ = 416318700. Its totient is φ = 89912832.

The previous prime is 194811943. The next prime is 194811971. The reversal of 194811968 is 869118491.

It can be written as a sum of positive squares in 2 ways, for example, as 32809984 + 162001984 = 5728^2 + 12728^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116243 + ... + 117906.

It is an arithmetic number, because the mean of its divisors is an integer number (14868525).

Almost surely, 2^194811968 is an apocalyptic number.

It is an amenable number.

194811968 is an abundant number, since it is smaller than the sum of its proper divisors (221506732).

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

194811968 is a wasteful number, since it uses less digits than its factorization.

194811968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234174 (or 234164 counting only the distinct ones).

The product of its digits is 124416, while the sum is 47.

The square root of 194811968 is about 13957.5057943746. The cubic root of 194811968 is about 579.7025506122.

The spelling of 194811968 in words is "one hundred ninety-four million, eight hundred eleven thousand, nine hundred sixty-eight".