194799847980 has 96 divisors (see below), whose sum is σ = 555610857984. Its totient is φ = 50986865664.

The previous prime is 194799847969. The next prime is 194799847997. The reversal of 194799847980 is 89748997491.

It is a super-2 number, since 2×194799847980² (a number of 23 digits) contains 22 as substring.

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, 558867 + ... + 837813.

It is an arithmetic number, because the mean of its divisors is an integer number (5787613104).

Almost surely, 2^194799847980 is an apocalyptic number.

194799847980 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 194799847980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277805428992).

194799847980 is an abundant number, since it is smaller than the sum of its proper divisors (360811010004).

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

194799847980 is a wasteful number, since it uses less digits than its factorization.

194799847980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279175 (or 279173 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 75.

The spelling of 194799847980 in words is "one hundred ninety-four billion, seven hundred ninety-nine million, eight hundred forty-seven thousand, nine hundred eighty".