9169159475844 has 27 divisors (see below), whose sum is σ = 23177643489637. Its totient is φ = 3056380435824.

The previous prime is 9169159475821. The next prime is 9169159475849. The reversal of 9169159475844 is 4485749519619.

The square root of 9169159475844 is 3028062.

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

9169159475844 is a `hidden beast` number, since 9 + 1 + 69 + 1 + 59 + 475 + 8 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8721213048900 + 447946426944 = 2953170^2 + 669288^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9169159475849) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17916034 + ... + 18420710.

Almost surely, 2^{9169159475844} is an apocalyptic number.

9169159475844 is the 3028062-nd square number.

It is an amenable number.

9169159475844 is an abundant number, since it is smaller than the sum of its proper divisors (14008484013793).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9169159475844 is an frugal number, since it uses more digits than its factorization.

9169159475844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009364 (or 504682 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 72.

The spelling of 9169159475844 in words is "nine trillion, one hundred sixty-nine billion, one hundred fifty-nine million, four hundred seventy-five thousand, eight hundred forty-four".