195264120769 has 3 divisors (see below), whose sum is σ = 195264562657. Its totient is φ = 195263678882.

The previous prime is 195264120739. The next prime is 195264120811. The reversal of 195264120769 is 967021462591.

The square root of 195264120769 is 441887.

It is a perfect power (a square), and thus also a powerful number.

195264120769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 195264120769 - 2¹⁵ = 195264088001 is a prime.

It is a super-2 number, since 2×195264120769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195264120739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 220944 + ... + 662830.

Almost surely, 2^195264120769 is an apocalyptic number.

195264120769 is the 441887-th square number.

195264120769 is the 220944-th centered octagonal number.

It is an amenable number.

195264120769 is a deficient number, since it is larger than the sum of its proper divisors (441888).

195264120769 is an frugal number, since it uses more digits than its factorization.

195264120769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883774 (or 441887 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 195264120769 in words is "one hundred ninety-five billion, two hundred sixty-four million, one hundred twenty thousand, seven hundred sixty-nine".