1,659
1,659 is a composite number, odd, a calendar year.
Notable events — 1659 AD
- Nov 7 The Treaty of the Pyrenees ends the Franco-Spanish War.
- May 25 Richard Cromwell abdicates as Lord Protector.
- Undated Christiaan Huygens publishes Systema Saturnium describing Saturn's rings.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
Year facts
- Year type
-
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
- Days in year
- 365
- ISO weeks
- 52
- Started on
-
Wednesday
January 1, 1659
- Ended on
-
Wednesday
December 31, 1659
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 13
Sunday, April 13, 1659
- Decade
-
1650s
1650–1659
- Century
-
17th century
1601–1700
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
367
367 years before 2026.
In other calendars
- Hebrew
-
5419 / 5420 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1069 / 1070 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Pig
Sexagenary cycle position 36 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2202 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1037 / 1038 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1651 / 1652 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1581 / 1580 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 21
- Digit product
- 270
- Digital root
- 3
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 9,561
- Recamán's sequence
- a(786) = 1,659
- Square (n²)
- 2,752,281
- Cube (n³)
- 4,566,034,179
- Divisor count
- 8
- σ(n) — sum of divisors
- 2,560
- φ(n) — Euler's totient
- 936
- Sum of prime factors
- 89
Primality
Prime factorization: 3 × 7 × 79
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand six hundred fifty-nine
- Ordinal
- 1659th
- Roman numeral
- MDCLIX
- Binary
- 11001111011
- Octal
- 3173
- Hexadecimal
- 0x67B
- Base64
- Bns=
- One's complement
- 63,876 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αχνθʹ
- Mayan (base 20)
- 𝋤·𝋢·𝋳
- Chinese
- 一千六百五十九
- Chinese (financial)
- 壹仟陸佰伍拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,659 = 5
- e — Euler's number (e)
- Digit 1,659 = 7
- φ — Golden ratio (φ)
- Digit 1,659 = 0
- √2 — Pythagoras's (√2)
- Digit 1,659 = 8
- ln 2 — Natural log of 2
- Digit 1,659 = 0
- γ — Euler-Mascheroni (γ)
- Digit 1,659 = 9
Also seen as
UTF-8 encoding: D9 BB (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.123.
- Address
- 0.0.6.123
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.123
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1659 first appears in π at position 27,998 of the decimal expansion (the 27,998ordinal-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.