16813530889 has 9 divisors (see below), whose sum is σ = 16963577991. Its totient is φ = 16664802840.

The previous prime is 16813530869. The next prime is 16813530907. The reversal of 16813530889 is 98803531861.

The square root of 16813530889 is 129667.

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

16813530889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9787738489 + 7025792400 = 98933^2 + 83820^2 .

It is not a de Polignac number, because 16813530889 - 2⁵ = 16813530857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16813530809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16467199 + ... + 16468219.

It is an arithmetic number, because the mean of its divisors is an integer number (1884841999).

Almost surely, 2^16813530889 is an apocalyptic number.

16813530889 is the 129667-th square number.

16813530889 is the 64834-th centered octagonal number.

It is an amenable number.

16813530889 is a deficient number, since it is larger than the sum of its proper divisors (150047102).

16813530889 is an frugal number, since it uses more digits than its factorization.

16813530889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 16813530889 in words is "sixteen billion, eight hundred thirteen million, five hundred thirty thousand, eight hundred eighty-nine".