194345231904 has 384 divisors, whose sum is σ = 612686592000. Its totient is φ = 59743816704.

The previous prime is 194345231891. The next prime is 194345231921. The reversal of 194345231904 is 409132543491.

194345231904 is a `hidden beast` number, since 1 + 9 + 4 + 3 + 452 + 3 + 190 + 4 = 666.

194345231904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 194345231904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120935869 + ... + 120937475.

It is an arithmetic number, because the mean of its divisors is an integer number (1595538000).

Almost surely, 2^194345231904 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 194345231904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306343296000).

194345231904 is an abundant number, since it is smaller than the sum of its proper divisors (418341360096).

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

194345231904 is a wasteful number, since it uses less digits than its factorization.

194345231904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 194345231904 in words is "one hundred ninety-four billion, three hundred forty-five million, two hundred thirty-one thousand, nine hundred four".