194982685920 has 384 divisors, whose sum is σ = 788275514880. Its totient is φ = 44487843840.

The previous prime is 194982685907. The next prime is 194982685973. The reversal of 194982685920 is 29586289491.

194982685920 is a `hidden beast` number, since 19 + 4 + 9 + 8 + 26 + 8 + 592 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 687159 + ... + 928521.

It is an arithmetic number, because the mean of its divisors is an integer number (2052800820).

Almost surely, 2^194982685920 is an apocalyptic number.

194982685920 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 194982685920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394137757440).

194982685920 is an abundant number, since it is smaller than the sum of its proper divisors (593292828960).

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

194982685920 is a wasteful number, since it uses less digits than its factorization.

194982685920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241415 (or 241401 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 194982685920 in words is "one hundred ninety-four billion, nine hundred eighty-two million, six hundred eighty-five thousand, nine hundred twenty".