189695266856 has 16 divisors (see below), whose sum is σ = 355687434900. Its totient is φ = 94845284224.

The previous prime is 189695266843. The next prime is 189695266861. The reversal of 189695266856 is 658662596981.

It can be written as a sum of positive squares in 2 ways, for example, as 158141428900 + 31553837956 = 397670^2 + 177634^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189695266856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77060 + ... + 620748.

Almost surely, 2^189695266856 is an apocalyptic number.

It is an amenable number.

189695266856 is a deficient number, since it is larger than the sum of its proper divisors (165992168044).

189695266856 is a wasteful number, since it uses less digits than its factorization.

189695266856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587308 (or 587304 counting only the distinct ones).

The product of its digits is 335923200, while the sum is 71.

It can be divided in two parts, 18969 and 5266856, that added together give a palindrome (5285825).

The spelling of 189695266856 in words is "one hundred eighty-nine billion, six hundred ninety-five million, two hundred sixty-six thousand, eight hundred fifty-six".