9812772189 has 64 divisors (see below), whose sum is σ = 16426229760. Its totient is φ = 5738040000.

The previous prime is 9812772173. The next prime is 9812772241.

9812772189 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9812772189 - 2⁴ = 9812772173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9812772139) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 986139 + ... + 996039.

It is an arithmetic number, because the mean of its divisors is an integer number (256659840).

Almost surely, 2^9812772189 is an apocalyptic number.

9812772189 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

9812772189 is a deficient number, since it is larger than the sum of its proper divisors (6613457571).

9812772189 is a wasteful number, since it uses less digits than its factorization.

9812772189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10039 (or 10033 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 9812772189 is about 99059.4376573984. The cubic root of 9812772189 is about 2140.9042230140.

The spelling of 9812772189 in words is "nine billion, eight hundred twelve million, seven hundred seventy-two thousand, one hundred eighty-nine".