1,880
1,880 is a composite number, even, a calendar year.
1,880 (one thousand eight hundred eighty) is an even 4-digit number. It is a composite number with 16 divisors, and factors as 2³ × 5 × 47. Its proper divisors sum to 2,440, more than the number itself, making it an abundant number. Written other ways, in Roman numerals it is MDCCCLXXX and in binary, 11101011000.
Interestingness
Notable events — 1880 AD
- Apr 23 William Gladstone returns as UK prime minister.
- Sep 4 The Greenback Party nominates James B. Weaver for US president.
- Jul 11 Australia's bushranger Ned Kelly is captured at Glenrowan.
- Nov 2 James A. Garfield wins the US presidential election.
- Nov 28 The first electric streetlights are demonstrated by Charles F. Brush in Wabash, Indiana.
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
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 1880
- Ended on
-
Friday
December 31, 1880
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Easter Sunday
-
March 28
Sunday, March 28, 1880
- Decade
-
1880s
1880–1889
- Century
-
19th century
1801–1900
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
146
146 years before 2026.
- US presidential election
-
Yes
US holds a presidential election in years divisible by 4 starting from 1788.
In other calendars
- Hebrew
-
5640 / 5641 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1297 / 1298 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Dragon
Sexagenary cycle position 17 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2423 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1258 / 1259 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1872 / 1873 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1802 / 1801 Saka
Indian national calendar; year starts in March.
- Japanese
-
Meiji 13
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 881
- Flips to (rotate 180°)
- 881
- Recamán's sequence
- a(7,984) = 1,880
- Square (n²)
- 3,534,400
- Cube (n³)
- 6,644,672,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 4,320
- φ(n) — Euler's totient
- 736
- Sum of prime factors
- 58
Primality
Prime factorization: 2 3 × 5 × 47
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,880 = [43; (2, 1, 3, 1, 2, 86)]
Period length 6 — the block in parentheses repeats forever.
Representations
- In words
- one thousand eight hundred eighty
- Ordinal
- 1880th
- Roman numeral
- MDCCCLXXX
- Binary
- 11101011000
- Octal
- 3530
- Hexadecimal
- 0x758
- Base64
- B1g=
- One's complement
- 63,655 (16-bit)
- Scientific notation
- 1.88 × 10³
- As a duration
- 1,880 s = 31 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵αωπʹ
- Mayan (base 20)
- 𝋤·𝋮·𝋠
- Chinese
- 一千八百八十
- Chinese (financial)
- 壹仟捌佰捌拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,880 = 2
- e — Euler's number (e)
- Digit 1,880 = 5
- φ — Golden ratio (φ)
- Digit 1,880 = 6
- √2 — Pythagoras's (√2)
- Digit 1,880 = 0
- ln 2 — Natural log of 2
- Digit 1,880 = 7
- γ — Euler-Mascheroni (γ)
- Digit 1,880 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1880, here are decompositions:
- 3 + 1877 = 1880
- 7 + 1873 = 1880
- 13 + 1867 = 1880
- 19 + 1861 = 1880
- 79 + 1801 = 1880
- 97 + 1783 = 1880
- 103 + 1777 = 1880
- 127 + 1753 = 1880
Showing the first eight; more decompositions exist.
UTF-8 encoding: DD 98 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.88.
- Address
- 0.0.7.88
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.88
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,880 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A♯6 (1864.7 Hz, +14¢)
- Scientific pitch (C4 = 256 Hz): B6 (1933.1 Hz, -48¢ — about midway to A♯6)
- Baroque pitch (A4 = 415 Hz): B6 (1863.3 Hz, +15¢)
The digit sequence 1880 first appears in π at position 17,915 of the decimal expansion (the 17,915ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.