194845664 has 96 divisors (see below), whose sum is σ = 441987840. Its totient is φ = 83865600.

The previous prime is 194845657. The next prime is 194845669. The reversal of 194845664 is 466548491.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194845669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373724 + ... + 374244.

It is an arithmetic number, because the mean of its divisors is an integer number (4604040).

Almost surely, 2^194845664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194845664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220993920).

194845664 is an abundant number, since it is smaller than the sum of its proper divisors (247142176).

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

194845664 is a wasteful number, since it uses less digits than its factorization.

194845664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 596 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The square root of 194845664 is about 13958.7128346420. The cubic root of 194845664 is about 579.7359717811.

The spelling of 194845664 in words is "one hundred ninety-four million, eight hundred forty-five thousand, six hundred sixty-four".