195009045745 has 8 divisors (see below), whose sum is σ = 234013225320. Its totient is φ = 156005656320.

The previous prime is 195009045739. The next prime is 195009045767. The reversal of 195009045745 is 547540900591.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12375895009 + 182633150736 = 111247^2 + 427356^2 .

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

It is not a de Polignac number, because 195009045745 - 2²⁵ = 194975491313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865401 + ... + 1067209.

It is an arithmetic number, because the mean of its divisors is an integer number (29251653165).

Almost surely, 2^195009045745 is an apocalyptic number.

It is an amenable number.

195009045745 is a deficient number, since it is larger than the sum of its proper divisors (39004179575).

195009045745 is a wasteful number, since it uses less digits than its factorization.

195009045745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395075.

The product of its (nonzero) digits is 1134000, while the sum is 49.

The spelling of 195009045745 in words is "one hundred ninety-five billion, nine million, forty-five thousand, seven hundred forty-five".