189305828065 has 64 divisors (see below), whose sum is σ = 262094192640. Its totient is φ = 130309585920.

The previous prime is 189305828051. The next prime is 189305828077. The reversal of 189305828065 is 560828503981.

It is a de Polignac number, because none of the positive numbers 2^k-189305828065 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189305827997 and 189305828015.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18368704 + ... + 18379006.

It is an arithmetic number, because the mean of its divisors is an integer number (4095221760).

Almost surely, 2^189305828065 is an apocalyptic number.

It is an amenable number.

189305828065 is a deficient number, since it is larger than the sum of its proper divisors (72788364575).

189305828065 is a wasteful number, since it uses less digits than its factorization.

189305828065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10742.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 189305828065 in words is "one hundred eighty-nine billion, three hundred five million, eight hundred twenty-eight thousand, sixty-five".