9128285289 has 12 divisors (see below), whose sum is σ = 13186141956. Its totient is φ = 6085135392.

The previous prime is 9128285279. The next prime is 9128285293. The reversal of 9128285289 is 9825828219.

It is a happy number.

9128285289 is a `hidden beast` number, since 9 + 1 + 282 + 85 + 289 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3873195225 + 5255090064 = 62235^2 + 72492^2 .

It is not a de Polignac number, because 9128285289 - 2⁹ = 9128284777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9128285209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221239 + ... + 259235.

It is an arithmetic number, because the mean of its divisors is an integer number (1098845163).

Almost surely, 2^9128285289 is an apocalyptic number.

It is an amenable number.

9128285289 is a deficient number, since it is larger than the sum of its proper divisors (4057856667).

9128285289 is a wasteful number, since it uses less digits than its factorization.

9128285289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64696 (or 64693 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 9128285289 is about 95542.0603137697. The cubic root of 9128285289 is about 2089.9203505127.

The spelling of 9128285289 in words is "nine billion, one hundred twenty-eight million, two hundred eighty-five thousand, two hundred eighty-nine".