194851668 has 24 divisors (see below), whose sum is σ = 495986400. Its totient is φ = 59045920.

The previous prime is 194851661. The next prime is 194851693. The reversal of 194851668 is 866158491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194851661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737943 + ... + 738206.

It is an arithmetic number, because the mean of its divisors is an integer number (20666100).

Almost surely, 2^194851668 is an apocalyptic number.

It is an amenable number.

194851668 is an abundant number, since it is smaller than the sum of its proper divisors (301134732).

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

194851668 is a wasteful number, since it uses less digits than its factorization.

194851668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476167 (or 1476165 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 194851668 is about 13958.9278957949. The cubic root of 194851668 is about 579.7419264068.

The spelling of 194851668 in words is "one hundred ninety-four million, eight hundred fifty-one thousand, six hundred sixty-eight".