194853133680 has 160 divisors (see below), whose sum is σ = 641763549504. Its totient is φ = 48737107968.

The previous prime is 194853133669. The next prime is 194853133693. The reversal of 194853133680 is 86331358491.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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, 1113942 + ... + 1276938.

Almost surely, 2^194853133680 is an apocalyptic number.

194853133680 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 194853133680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320881774752).

194853133680 is an abundant number, since it is smaller than the sum of its proper divisors (446910415824).

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

194853133680 is a wasteful number, since it uses less digits than its factorization.

194853133680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163323 (or 163317 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 194853133680 in words is "one hundred ninety-four billion, eight hundred fifty-three million, one hundred thirty-three thousand, six hundred eighty".