165559689

165559689 is a nine-digit decimal integer. In the absence of context, it functions as a numeric identifier that could be used in various information systems as a primary key, catalog number, serial code, or transaction identifier.

Mathematical properties of 165559689 include its status as an odd, composite number. The sum of its digits is 54, which makes the number divisible by 9 (and therefore by 3 as well). Indeed, 165559689 = 9 × 18,395,521. The cofactor 18,395,521 is not divisible by 3, indicating a partial factorization; a full prime factorization would require additional calculation.

As a representation, such numbers appear in computing and data management in multiple ways. They may serve as database keys, product stock-keeping units, or internal control numbers for organizations. Some systems store identifiers as fixed-width fields, potentially padding with leading zeros, though 165559689 itself is typically displayed without padding.

Timestamp interpretation is another possible context. If treated as a Unix epoch timestamp (seconds since January 1, 1970 UTC), 165559689 corresponds to a date in the early 1970s, approximately around March 30, 1975 UTC. This illustrates how the same sequence of digits can map to different meanings depending on the encoding or context used.

In summary, 165559689 is a general numeric identifier with straightforward divisibility properties, whose meaning depends entirely on the system that assigns and uses it. See also numeric identifiers, Unix time, and decimal representations.