9828144769 has 3 divisors (see below), whose sum is σ = 9828243907. Its totient is φ = 9828045632.

The previous prime is 9828144751. The next prime is 9828144773. The reversal of 9828144769 is 9674418289.

The square root of 9828144769 is 99137.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 397404225 + 9430740544 = 19935^2 + 97112^2 .

It is not a de Polignac number, because 9828144769 - 2³³ = 1238210177 is a prime.

It is a super-2 number, since 2×9828144769² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9828144749) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 49569 + ... + 148705.

Almost surely, 2^9828144769 is an apocalyptic number.

9828144769 is the 99137-th square number.

9828144769 is the 49569-th centered octagonal number.

It is an amenable number.

9828144769 is a deficient number, since it is larger than the sum of its proper divisors (99138).

9828144769 is an frugal number, since it uses more digits than its factorization.

9828144769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198274 (or 99137 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The cubic root of 9828144769 is about 2142.0216119853.

The spelling of 9828144769 in words is "nine billion, eight hundred twenty-eight million, one hundred forty-four thousand, seven hundred sixty-nine".