9195552861889 has 3 divisors (see below), whose sum is σ = 9195555894307. Its totient is φ = 9195549829472.

The previous prime is 9195552861857. The next prime is 9195552861919. The reversal of 9195552861889 is 9881682555919.

The square root of 9195552861889 is 3032417.

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

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 can be written as a sum of positive squares in only one way, i.e., 1834142033025 + 7361410828864 = 1354305^2 + 2713192^2 .

It is not a de Polignac number, because 9195552861889 - 2⁵ = 9195552861857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9195552861389) 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, 1516209 + ... + 4548625.

Almost surely, 2^{9195552861889} is an apocalyptic number.

9195552861889 is the 3032417-th square number.

9195552861889 is the 1516209-th centered octagonal number.

It is an amenable number.

9195552861889 is a deficient number, since it is larger than the sum of its proper divisors (3032418).

9195552861889 is an frugal number, since it uses more digits than its factorization.

9195552861889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064834 (or 3032417 counting only the distinct ones).

The product of its digits is 559872000, while the sum is 76.

The spelling of 9195552861889 in words is "nine trillion, one hundred ninety-five billion, five hundred fifty-two million, eight hundred sixty-one thousand, eight hundred eighty-nine".