195981016 has 64 divisors (see below), whose sum is σ = 464693760. Its totient is φ = 75264000.

The previous prime is 195980989. The next prime is 195981017. The reversal of 195981016 is 610189591.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 195981016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195981017) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 41496 + ... + 45976.

It is an arithmetic number, because the mean of its divisors is an integer number (7260840).

Almost surely, 2^195981016 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 195981016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232346880).

195981016 is an abundant number, since it is smaller than the sum of its proper divisors (268712744).

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

195981016 is a wasteful number, since it uses less digits than its factorization.

195981016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576 (or 4572 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 40.

The square root of 195981016 is about 13999.3219835819. The cubic root of 195981016 is about 580.8598186712.

The spelling of 195981016 in words is "one hundred ninety-five million, nine hundred eighty-one thousand, sixteen".