194889888000 has 864 divisors, whose sum is σ = 739575712512. Its totient is φ = 51093504000.

The previous prime is 194889887981. The next prime is 194889888041. The reversal of 194889888000 is 888988491.

It is a tau number, because it is divible by the number of its divisors (864).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 552095824 + ... + 552096176.

It is an arithmetic number, because the mean of its divisors is an integer number (855990408).

Almost surely, 2^194889888000 is an apocalyptic number.

194889888000 is a gapful number since it is divisible by the number (10) 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 194889888000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369787856256).

194889888000 is an abundant number, since it is smaller than the sum of its proper divisors (544685824512).

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

194889888000 is an frugal number, since it uses more digits than its factorization.

194889888000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 63.

The spelling of 194889888000 in words is "one hundred ninety-four billion, eight hundred eighty-nine million, eight hundred eighty-eight thousand".