9791228159 has 4 divisors (see below), whose sum is σ = 9813532080. Its totient is φ = 9768924240.

The previous prime is 9791228137. The next prime is 9791228171. The reversal of 9791228159 is 9518221979.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9791228159 - 2²⁴ = 9774450943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9791228159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9791228189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11151302 + ... + 11152179.

It is an arithmetic number, because the mean of its divisors is an integer number (2453383020).

Almost surely, 2^9791228159 is an apocalyptic number.

9791228159 is a deficient number, since it is larger than the sum of its proper divisors (22303921).

9791228159 is a wasteful number, since it uses less digits than its factorization.

9791228159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22303920.

The product of its digits is 816480, while the sum is 53.

The square root of 9791228159 is about 98950.6349600648. The cubic root of 9791228159 is about 2139.3362834568.

The spelling of 9791228159 in words is "nine billion, seven hundred ninety-one million, two hundred twenty-eight thousand, one hundred fifty-nine".