1,608
1,608 is a composite number, even, a calendar year.
Notable events — 1608 AD
- Jul 3 Samuel de Champlain founds Quebec City.
- Sep 25 Hans Lippershey applies for a patent on the telescope.
- Jul 4 The League of Princes forms in the Holy Roman Empire.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Tuesday
January 1, 1608
- Ended on
-
Wednesday
December 31, 1608
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 6
Sunday, April 6, 1608
- Decade
-
1600s
1600–1609
- Century
-
17th century
1601–1700
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
418
418 years before 2026.
In other calendars
- Hebrew
-
5368 / 5369 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1016 / 1017 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Monkey
Sexagenary cycle position 45 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2151 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
986 / 987 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1600 / 1601 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1530 / 1529 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,061
- Flips to (rotate 180°)
- 8,091
- Recamán's sequence
- a(1,328) = 1,608
- Square (n²)
- 2,585,664
- Cube (n³)
- 4,157,747,712
- Divisor count
- 16
- σ(n) — sum of divisors
- 4,080
- φ(n) — Euler's totient
- 528
- Sum of prime factors
- 76
Primality
Prime factorization: 2 3 × 3 × 67
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand six hundred eight
- Ordinal
- 1608th
- Roman numeral
- MDCVIII
- Binary
- 11001001000
- Octal
- 3110
- Hexadecimal
- 0x648
- Base64
- Bkg=
- One's complement
- 63,927 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αχηʹ
- Mayan (base 20)
- 𝋤·𝋠·𝋨
- Chinese
- 一千六百零八
- Chinese (financial)
- 壹仟陸佰零捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,608 = 6
- e — Euler's number (e)
- Digit 1,608 = 8
- φ — Golden ratio (φ)
- Digit 1,608 = 0
- √2 — Pythagoras's (√2)
- Digit 1,608 = 8
- ln 2 — Natural log of 2
- Digit 1,608 = 9
- γ — Euler-Mascheroni (γ)
- Digit 1,608 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1608, here are decompositions:
- 7 + 1601 = 1608
- 11 + 1597 = 1608
- 29 + 1579 = 1608
- 37 + 1571 = 1608
- 41 + 1567 = 1608
- 59 + 1549 = 1608
- 97 + 1511 = 1608
- 109 + 1499 = 1608
Showing the first eight; more decompositions exist.
UTF-8 encoding: D9 88 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.72.
- Address
- 0.0.6.72
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.72
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1608 first appears in π at position 2,345 of the decimal expansion (the 2,345ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.