195532000861 has 8 divisors (see below), whose sum is σ = 195901301304. Its totient is φ = 195163046400.

The previous prime is 195532000813. The next prime is 195532000883. The reversal of 195532000861 is 168000235591.

It can be written as a sum of positive squares in 4 ways, for example, as 327972100 + 195204028761 = 18110^2 + 441819^2 .

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 195532000861 - 2¹⁹ = 195531476573 is a prime.

It is a super-2 number, since 2×195532000861² (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 (195532000361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059135 + ... + 1229971.

It is an arithmetic number, because the mean of its divisors is an integer number (24487662663).

Almost surely, 2^195532000861 is an apocalyptic number.

195532000861 is the 236361-st centered heptagonal number.

It is an amenable number.

195532000861 is a deficient number, since it is larger than the sum of its proper divisors (369300443).

195532000861 is a wasteful number, since it uses less digits than its factorization.

195532000861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172991.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 195532000861 in words is "one hundred ninety-five billion, five hundred thirty-two million, eight hundred sixty-one", and thus it is an aban number.