194828886868 has 72 divisors (see below), whose sum is σ = 435428572320. Its totient is φ = 75423741120.

The previous prime is 194828886817. The next prime is 194828886883. The reversal of 194828886868 is 868688828491.

It is a junction number, because it is equal to n+sod(n) for n = 194828886794 and 194828886803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50703 + ... + 626281.

It is an arithmetic number, because the mean of its divisors is an integer number (6047619060).

Almost surely, 2^194828886868 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 194828886868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217714286160).

194828886868 is an abundant number, since it is smaller than the sum of its proper divisors (240599685452).

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

194828886868 is a wasteful number, since it uses less digits than its factorization.

194828886868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575765 (or 575756 counting only the distinct ones).

The product of its digits is 679477248, while the sum is 76.

The spelling of 194828886868 in words is "one hundred ninety-four billion, eight hundred twenty-eight million, eight hundred eighty-six thousand, eight hundred sixty-eight".