9128489642 has 16 divisors (see below), whose sum is σ = 14291620992. Its totient is φ = 4364714640.

The previous prime is 9128489641. The next prime is 9128489659. The reversal of 9128489642 is 2469848219.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9128489641) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 180923 + ... + 225809.

It is an arithmetic number, because the mean of its divisors is an integer number (893226312).

Almost surely, 2^9128489642 is an apocalyptic number.

9128489642 is a deficient number, since it is larger than the sum of its proper divisors (5163131350).

9128489642 is a wasteful number, since it uses less digits than its factorization.

9128489642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49333.

The product of its digits is 1990656, while the sum is 53.

The square root of 9128489642 is about 95543.1297477741. The cubic root of 9128489642 is about 2089.9359459319.

The spelling of 9128489642 in words is "nine billion, one hundred twenty-eight million, four hundred eighty-nine thousand, six hundred forty-two".