189012616589 has 16 divisors (see below), whose sum is σ = 197479391040. Its totient is φ = 180724752000.

The previous prime is 189012616567. The next prime is 189012616649. The reversal of 189012616589 is 985616210981.

It is a cyclic number.

It is not a de Polignac number, because 189012616589 - 2²⁰ = 189011568013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189012616489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7083617 + ... + 7110249.

It is an arithmetic number, because the mean of its divisors is an integer number (12342461940).

Almost surely, 2^189012616589 is an apocalyptic number.

It is an amenable number.

189012616589 is a deficient number, since it is larger than the sum of its proper divisors (8466774451).

189012616589 is a wasteful number, since it uses less digits than its factorization.

189012616589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29980.

The product of its (nonzero) digits is 1866240, while the sum is 56.

The spelling of 189012616589 in words is "one hundred eighty-nine billion, twelve million, six hundred sixteen thousand, five hundred eighty-nine".