194317980 has 96 divisors (see below), whose sum is σ = 566879040. Its totient is φ = 49674240.

The previous prime is 194317967. The next prime is 194317987. The reversal of 194317980 is 89713491.

It is a happy number.

194317980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194317987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314632 + ... + 315248.

It is an arithmetic number, because the mean of its divisors is an integer number (5904990).

Almost surely, 2^194317980 is an apocalyptic number.

194317980 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 194317980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283439520).

194317980 is an abundant number, since it is smaller than the sum of its proper divisors (372561060).

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

194317980 is a wasteful number, since it uses less digits than its factorization.

194317980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 194317980 is about 13939.7984203503. The cubic root of 194317980 is about 579.2121486862.

The spelling of 194317980 in words is "one hundred ninety-four million, three hundred seventeen thousand, nine hundred eighty".