194198694912 has 616 divisors, whose sum is σ = 612144705600. Its totient is φ = 61487382528.

The previous prime is 194198694871. The next prime is 194198694919. The reversal of 194198694912 is 219496891491.

194198694912 is a `hidden beast` number, since 19 + 41 + 98 + 6 + 9 + 491 + 2 = 666.

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

Its product of digits (10077696) is a multiple of the sum of its prime factors (243).

It is a self number, because there is not a number n which added to its sum of digits gives 194198694912.

It is not an unprimeable number, because it can be changed into a prime (194198694919) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2182007764 + ... + 2182007852.

Almost surely, 2^194198694912 is an apocalyptic number.

194198694912 is a gapful number since it is divisible by the number (12) 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 194198694912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306072352800).

194198694912 is an abundant number, since it is smaller than the sum of its proper divisors (417946010688).

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

194198694912 is an frugal number, since it uses more digits than its factorization.

194198694912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 210 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 63.

The spelling of 194198694912 in words is "one hundred ninety-four billion, one hundred ninety-eight million, six hundred ninety-four thousand, nine hundred twelve".