189281705965 has 8 divisors (see below), whose sum is σ = 247786960608. Its totient is φ = 137659422480.

The previous prime is 189281705957. The next prime is 189281705981. The reversal of 189281705965 is 569507182981.

189281705965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189281705965 - 2³ = 189281705957 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1720742727 + ... + 1720742836.

It is an arithmetic number, because the mean of its divisors is an integer number (30973370076).

Almost surely, 2^189281705965 is an apocalyptic number.

It is an amenable number.

189281705965 is a deficient number, since it is larger than the sum of its proper divisors (58505254643).

189281705965 is a wasteful number, since it uses less digits than its factorization.

189281705965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441485579.

The product of its (nonzero) digits is 10886400, while the sum is 61.

The spelling of 189281705965 in words is "one hundred eighty-nine billion, two hundred eighty-one million, seven hundred five thousand, nine hundred sixty-five".