1,878
1,878 is a composite number, even, a calendar year.
Notable events — 1878 AD
- Mar 3 The Treaty of San Stefano ends the Russo-Turkish War.
- Jun 13 The Congress of Berlin redraws the map of the Balkans.
- Feb 19 Thomas Edison patents the phonograph.
- Oct 21 Edison demonstrates his improved incandescent light bulb.
- Jan 9 Umberto I becomes king of Italy upon the death of Victor Emmanuel II.
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, 1878
- Ended on
-
Tuesday
December 31, 1878
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Easter Sunday
-
April 21
Sunday, April 21, 1878
- Decade
-
1870s
1870–1879
- Century
-
19th century
1801–1900
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
148
148 years before 2026.
In other calendars
- Hebrew
-
5638 / 5639 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1294 / 1296 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Tiger
Sexagenary cycle position 15 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2421 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1256 / 1257 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1870 / 1871 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1800 / 1799 Saka
Indian national calendar; year starts in March.
- Japanese
-
Meiji 11
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 24
- Digit product
- 448
- Digital root
- 6
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,781
- Recamán's sequence
- a(7,988) = 1,878
- Square (n²)
- 3,526,884
- Cube (n³)
- 6,623,488,152
- Divisor count
- 8
- σ(n) — sum of divisors
- 3,768
- φ(n) — Euler's totient
- 624
- Sum of prime factors
- 318
Primality
Prime factorization: 2 × 3 × 313
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand eight hundred seventy-eight
- Ordinal
- 1878th
- Roman numeral
- MDCCCLXXVIII
- Binary
- 11101010110
- Octal
- 3526
- Hexadecimal
- 0x756
- Base64
- B1Y=
- One's complement
- 63,657 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αωοηʹ
- Mayan (base 20)
- 𝋤·𝋭·𝋲
- Chinese
- 一千八百七十八
- Chinese (financial)
- 壹仟捌佰柒拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,878 = 0
- e — Euler's number (e)
- Digit 1,878 = 5
- φ — Golden ratio (φ)
- Digit 1,878 = 5
- √2 — Pythagoras's (√2)
- Digit 1,878 = 9
- ln 2 — Natural log of 2
- Digit 1,878 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,878 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1878, here are decompositions:
- 5 + 1873 = 1878
- 7 + 1871 = 1878
- 11 + 1867 = 1878
- 17 + 1861 = 1878
- 31 + 1847 = 1878
- 47 + 1831 = 1878
- 67 + 1811 = 1878
- 89 + 1789 = 1878
Showing the first eight; more decompositions exist.
UTF-8 encoding: DD 96 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.86.
- Address
- 0.0.7.86
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.86
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1878 first appears in π at position 28,542 of the decimal expansion (the 28,542ordinal-suffix:nd 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.