195943449024 has 168 divisors, whose sum is σ = 591968295360. Its totient is φ = 61872125952.

The previous prime is 195943449007. The next prime is 195943449067. The reversal of 195943449024 is 420944349591.

195943449024 is a `hidden beast` number, since 1 + 9 + 594 + 3 + 4 + 49 + 0 + 2 + 4 = 666.

It is a Cunningham number, because it is equal to 442655²-1.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 774649 + ... + 995975.

Almost surely, 2^195943449024 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 195943449024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295984147680).

195943449024 is an abundant number, since it is smaller than the sum of its proper divisors (396024846336).

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

195943449024 is a wasteful number, since it uses less digits than its factorization.

195943449024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221427 (or 221414 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 195943449024 in words is "one hundred ninety-five billion, nine hundred forty-three million, four hundred forty-nine thousand, twenty-four".