194969571904 has 112 divisors (see below), whose sum is σ = 415486169280. Its totient is φ = 90492180480.

The previous prime is 194969571859. The next prime is 194969571911. The reversal of 194969571904 is 409175969491.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65799927 + ... + 65802889.

It is an arithmetic number, because the mean of its divisors is an integer number (3709697940).

Almost surely, 2^194969571904 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 194969571904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207743084640).

194969571904 is an abundant number, since it is smaller than the sum of its proper divisors (220516597376).

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

194969571904 is a wasteful number, since it uses less digits than its factorization.

194969571904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068 (or 4058 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 64.

The spelling of 194969571904 in words is "one hundred ninety-four billion, nine hundred sixty-nine million, five hundred seventy-one thousand, nine hundred four".