195057536309 has 4 divisors (see below), whose sum is σ = 199207696704. Its totient is φ = 190907375916.

The previous prime is 195057536287. The next prime is 195057536417. The reversal of 195057536309 is 903635750591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195057536309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195057533309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075080127 + ... + 2075080220.

It is an arithmetic number, because the mean of its divisors is an integer number (49801924176).

Almost surely, 2^195057536309 is an apocalyptic number.

It is an amenable number.

195057536309 is a deficient number, since it is larger than the sum of its proper divisors (4150160395).

195057536309 is an equidigital number, since it uses as much as digits as its factorization.

195057536309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150160394.

The product of its (nonzero) digits is 3827250, while the sum is 53.

The spelling of 195057536309 in words is "one hundred ninety-five billion, fifty-seven million, five hundred thirty-six thousand, three hundred nine".