16469358889 has 9 divisors (see below), whose sum is σ = 17497449957. Its totient is φ = 15498519744.

The previous prime is 16469358887. The next prime is 16469358911. The reversal of 16469358889 is 98885396461.

The square root of 16469358889 is 128333.

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

It can be written as a sum of positive squares in 4 ways, for example, as 6246531225 + 10222827664 = 79035^2 + 101108^2 .

It is not a de Polignac number, because 16469358889 - 2¹ = 16469358887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16469358881) 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 8 ways as a sum of consecutive naturals, for example, 2177887 + ... + 2185435.

Almost surely, 2^16469358889 is an apocalyptic number.

16469358889 is the 128333-rd square number.

16469358889 is the 64167-th centered octagonal number.

It is an amenable number.

16469358889 is a deficient number, since it is larger than the sum of its proper divisors (1028091068).

16469358889 is an frugal number, since it uses more digits than its factorization.

16469358889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15132 (or 7566 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 67.

The spelling of 16469358889 in words is "sixteen billion, four hundred sixty-nine million, three hundred fifty-eight thousand, eight hundred eighty-nine".