9809428563 has 16 divisors (see below), whose sum is σ = 15853622400. Its totient is φ = 5945108040.

The previous prime is 9809428529. The next prime is 9809428571. The reversal of 9809428563 is 3658249089.

It is not a de Polignac number, because 9809428563 - 2⁹ = 9809428051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9809428663) 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, 16513893 + ... + 16514486.

It is an arithmetic number, because the mean of its divisors is an integer number (990851400).

Almost surely, 2^9809428563 is an apocalyptic number.

9809428563 is a deficient number, since it is larger than the sum of its proper divisors (6044193837).

9809428563 is a wasteful number, since it uses less digits than its factorization.

9809428563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33028399 (or 33028393 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The square root of 9809428563 is about 99042.5593520281. The cubic root of 9809428563 is about 2140.6610298880.

The spelling of 9809428563 in words is "nine billion, eight hundred nine million, four hundred twenty-eight thousand, five hundred sixty-three".