195020891448 has 128 divisors (see below), whose sum is σ = 530745203520. Its totient is φ = 59466424320.

The previous prime is 195020891369. The next prime is 195020891491. The reversal of 195020891448 is 844198020591.

195020891448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 195020891448.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15406690 + ... + 15419342.

Almost surely, 2^195020891448 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 195020891448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265372601760).

195020891448 is an abundant number, since it is smaller than the sum of its proper divisors (335724312072).

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

195020891448 is a wasteful number, since it uses less digits than its factorization.

195020891448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13737 (or 13733 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 195020891448 in words is "one hundred ninety-five billion, twenty million, eight hundred ninety-one thousand, four hundred forty-eight".