194809550364 has 576 divisors, whose sum is σ = 627033415680. Its totient is φ = 51891840000.

The previous prime is 194809550363. The next prime is 194809550381. The reversal of 194809550364 is 463055908491.

194809550364 is a `hidden beast` number, since 1 + 9 + 4 + 80 + 9 + 550 + 3 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 194809550364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194809550363) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 373914424 + ... + 373914944.

It is an arithmetic number, because the mean of its divisors is an integer number (1088599680).

Almost surely, 2^194809550364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194809550364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313516707840).

194809550364 is an abundant number, since it is smaller than the sum of its proper divisors (432223865316).

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

194809550364 is a wasteful number, since it uses less digits than its factorization.

194809550364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 194809550364 in words is "one hundred ninety-four billion, eight hundred nine million, five hundred fifty thousand, three hundred sixty-four".