195954041785 has 4 divisors (see below), whose sum is σ = 235144850148. Its totient is φ = 156763233424.

The previous prime is 195954041783. The next prime is 195954041807. The reversal of 195954041785 is 587140459591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54575033769 + 141379008016 = 233613^2 + 376004^2 .

It is a cyclic number.

It is not a de Polignac number, because 195954041785 - 2¹ = 195954041783 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195954041783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19595404174 + ... + 19595404183.

It is an arithmetic number, because the mean of its divisors is an integer number (58786212537).

Almost surely, 2^195954041785 is an apocalyptic number.

It is an amenable number.

195954041785 is a deficient number, since it is larger than the sum of its proper divisors (39190808363).

195954041785 is an equidigital number, since it uses as much as digits as its factorization.

195954041785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39190808362.

The product of its (nonzero) digits is 9072000, while the sum is 58.

The spelling of 195954041785 in words is "one hundred ninety-five billion, nine hundred fifty-four million, forty-one thousand, seven hundred eighty-five".