195540811373 has 8 divisors (see below), whose sum is σ = 207143318520. Its totient is φ = 183949427200.

The previous prime is 195540811283. The next prime is 195540811381. The reversal of 195540811373 is 373118045591.

It can be written as a sum of positive squares in 4 ways, for example, as 589421284 + 194951390089 = 24278^2 + 441533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195540811373 - 2¹² = 195540807277 is a prime.

It is a super-2 number, since 2×195540811373² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195540811393) 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 7 ways as a sum of consecutive naturals, for example, 2744528 + ... + 2814873.

It is an arithmetic number, because the mean of its divisors is an integer number (25892914815).

Almost surely, 2^195540811373 is an apocalyptic number.

It is an amenable number.

195540811373 is a deficient number, since it is larger than the sum of its proper divisors (11602507147).

195540811373 is a wasteful number, since it uses less digits than its factorization.

195540811373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561487.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 195540811373 in words is "one hundred ninety-five billion, five hundred forty million, eight hundred eleven thousand, three hundred seventy-three".