1,619
1,619 is a prime, odd, a calendar year.
1,619 (one thousand six hundred nineteen) is an odd 4-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in Roman numerals it is MDCXIX and in binary, 11001010011.
Interestingness
Notable events — 1619 AD
- Aug 20 The first enslaved Africans arrive at Jamestown.
- Jul 30 The Virginia House of Burgesses meets, the first representative assembly in the American colonies.
- Aug 26 Frederick V of the Palatinate is elected King of Bohemia.
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
-
Tuesday
January 1, 1619
- Ended on
-
Tuesday
December 31, 1619
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Easter Sunday
-
March 31
Sunday, March 31, 1619
- Decade
-
1610s
1610–1619
- Century
-
17th century
1601–1700
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
407
407 years before 2026.
In other calendars
- Hebrew
-
5379 / 5380 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1028 / 1029 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Goat
Sexagenary cycle position 56 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2162 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
997 / 998 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1611 / 1612 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1541 / 1540 Saka
Indian national calendar; year starts in March.
Properties
Primality
1,619 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,619 = [40; (4, 4, 2, 15, 1, 1, 1, 5, 11, 3, 7, 1, 2, 1, 1, 1, 1, 1, 1, 1, 39, 1, 1, 1, …)]
Period length 42 — the block in parentheses repeats forever.
Representations
- In words
- one thousand six hundred nineteen
- Ordinal
- 1619th
- Roman numeral
- MDCXIX
- Binary
- 11001010011
- Octal
- 3123
- Hexadecimal
- 0x653
- Base64
- BlM=
- One's complement
- 63,916 (16-bit)
- Scientific notation
- 1.619 × 10³
- As a duration
- 1,619 s = 26 minutes, 59 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αχιθʹ
- Mayan (base 20)
- 𝋤·𝋠·𝋳
- Chinese
- 一千六百一十九
- Chinese (financial)
- 壹仟陸佰壹拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,619 = 1
- e — Euler's number (e)
- Digit 1,619 = 3
- φ — Golden ratio (φ)
- Digit 1,619 = 0
- √2 — Pythagoras's (√2)
- Digit 1,619 = 2
- ln 2 — Natural log of 2
- Digit 1,619 = 0
- γ — Euler-Mascheroni (γ)
- Digit 1,619 = 0
Also seen as
UTF-8 encoding: D9 93 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.83.
- Address
- 0.0.6.83
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.83
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,619 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯6 (1661.2 Hz, -45¢ — about midway to G6)
- Scientific pitch (C4 = 256 Hz): G♯6 (1625.5 Hz, -7¢)
- Baroque pitch (A4 = 415 Hz): A6 (1660 Hz, -43¢)
The digit sequence 1619 first appears in π at position 15,174 of the decimal expansion (the 15,174ordinal-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.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.