194807844 has 144 divisors (see below), whose sum is σ = 634023936. Its totient is φ = 48945600.

The previous prime is 194807843. The next prime is 194807857. The reversal of 194807844 is 448708491.

It is a self number, because there is not a number n which added to its sum of digits gives 194807844.

It is not an unprimeable number, because it can be changed into a prime (194807843) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 84799 + ... + 87065.

It is an arithmetic number, because the mean of its divisors is an integer number (4402944).

Almost surely, 2^194807844 is an apocalyptic number.

194807844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194807844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317011968).

194807844 is an abundant number, since it is smaller than the sum of its proper divisors (439216092).

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

194807844 is a wasteful number, since it uses less digits than its factorization.

194807844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326 (or 2321 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 194807844 is about 13957.3580594610. The cubic root of 194807844 is about 579.6984599837.

The spelling of 194807844 in words is "one hundred ninety-four million, eight hundred seven thousand, eight hundred forty-four".