1,654
1,654 is a composite number, even, a calendar year.
Notable events — 1654 AD
- May 6 Anglo-Dutch War ends with the Treaty of Westminster.
- Jun 9 Tsar Alexis of Russia annexes much of Ukraine via the Treaty of Pereyaslav (signed 1654 by Khmelnytsky).
- Undated Christiaan Huygens discovers 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
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 1654
- Ended on
-
Thursday
December 31, 1654
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Easter Sunday
-
April 5
Sunday, April 5, 1654
- Decade
-
1650s
1650–1659
- Century
-
17th century
1601–1700
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
372
372 years before 2026.
In other calendars
- Hebrew
-
5414 / 5415 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1064 / 1065 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Wood zodiac:Horse
Sexagenary cycle position 31 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2197 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1032 / 1033 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1646 / 1647 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1576 / 1575 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 × 827
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand six hundred fifty-four
- Ordinal
- 1654th
- Roman numeral
- MDCLIV
- Binary
- 11001110110
- Octal
- 3166
- Hexadecimal
- 0x676
- Base64
- BnY=
- One's complement
- 63,881 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αχνδʹ
- Mayan (base 20)
- 𝋤·𝋢·𝋮
- Chinese
- 一千六百五十四
- Chinese (financial)
- 壹仟陸佰伍拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,654 = 1
- e — Euler's number (e)
- Digit 1,654 = 3
- φ — Golden ratio (φ)
- Digit 1,654 = 1
- √2 — Pythagoras's (√2)
- Digit 1,654 = 3
- ln 2 — Natural log of 2
- Digit 1,654 = 7
- γ — Euler-Mascheroni (γ)
- Digit 1,654 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1654, here are decompositions:
- 17 + 1637 = 1654
- 41 + 1613 = 1654
- 47 + 1607 = 1654
- 53 + 1601 = 1654
- 71 + 1583 = 1654
- 83 + 1571 = 1654
- 101 + 1553 = 1654
- 131 + 1523 = 1654
Showing the first eight; more decompositions exist.
UTF-8 encoding: D9 B6 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.118.
- Address
- 0.0.6.118
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.118
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1654 first appears in π at position 3,650 of the decimal expansion (the 3,650ordinal-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.