194664447936 has 224 divisors, whose sum is σ = 666373754880. Its totient is φ = 54568829952.

The previous prime is 194664447931. The next prime is 194664448037. The reversal of 194664447936 is 639744466491.

194664447936 is a `hidden beast` number, since 1 + 9 + 46 + 64 + 447 + 93 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194664447931) 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, 489265 + ... + 792911.

Almost surely, 2^194664447936 is an apocalyptic number.

194664447936 is a gapful number since it is divisible by the number (16) 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 194664447936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333186877440).

194664447936 is an abundant number, since it is smaller than the sum of its proper divisors (471709306944).

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

194664447936 is a wasteful number, since it uses less digits than its factorization.

194664447936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303728 (or 303712 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 63.

The spelling of 194664447936 in words is "one hundred ninety-four billion, six hundred sixty-four million, four hundred forty-seven thousand, nine hundred thirty-six".