195303008761 has 45 divisors (see below), whose sum is σ = 236728596143. Its totient is φ = 161110365360.

The previous prime is 195303008753. The next prime is 195303008773. The reversal of 195303008761 is 167800303591.

The square root of 195303008761 is 441931.

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

It can be written as a sum of positive squares in only one way, i.e., 102412160361 + 92890848400 = 320019^2 + 304780^2 .

It is not a de Polignac number, because 195303008761 - 2³ = 195303008753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195303008711) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 627983796 + ... + 627984106.

Almost surely, 2^195303008761 is an apocalyptic number.

195303008761 is the 441931-st square number.

195303008761 is the 220966-th centered octagonal number.

It is an amenable number.

195303008761 is a deficient number, since it is larger than the sum of its proper divisors (41425587382).

195303008761 is an frugal number, since it uses more digits than its factorization.

195303008761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 195303008761 in words is "one hundred ninety-five billion, three hundred three million, eight thousand, seven hundred sixty-one".