194281584168 has 128 divisors (see below), whose sum is σ = 572337976320. Its totient is φ = 53803975680.

The previous prime is 194281584149. The next prime is 194281584181. The reversal of 194281584168 is 861485182491.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 843696 + ... + 1048992.

It is an arithmetic number, because the mean of its divisors is an integer number (4471390440).

Almost surely, 2^194281584168 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 194281584168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286168988160).

194281584168 is an abundant number, since it is smaller than the sum of its proper divisors (378056392152).

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

194281584168 is a wasteful number, since it uses less digits than its factorization.

194281584168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205487 (or 205483 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 57.

The spelling of 194281584168 in words is "one hundred ninety-four billion, two hundred eighty-one million, five hundred eighty-four thousand, one hundred sixty-eight".