1,968
1,968 is a composite number, even, a calendar year.
Notable events — 1968 AD
- Jan 30 The Viet Cong launch the Tet Offensive across South Vietnam.
- Apr 4 Martin Luther King Jr. is assassinated in Memphis.
- Jun 5 Robert F. Kennedy is shot in Los Angeles; he dies the next day.
- Aug 20 Warsaw Pact troops invade Czechoslovakia, crushing the Prague Spring.
- Oct 12 The Summer Olympics open in Mexico City; Tommie Smith and John Carlos give the Black Power salute.
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
- 52
- Started on
-
Monday
January 1, 1968
- Ended on
-
Tuesday
December 31, 1968
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Easter Sunday
-
April 14
Sunday, April 14, 1968
- Decade
-
1960s
1960–1969
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
58
58 years before 2026.
- US presidential election
-
Yes
US holds a presidential election in years divisible by 4 starting from 1788.
- Summer Olympics
- Yes
- Winter Olympics
-
Yes
Held in the same year as the Summer Games until 1992.
In other calendars
- Hebrew
-
5728 / 5729 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1387 / 1388 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Monkey
Sexagenary cycle position 45 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2511 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1346 / 1347 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1960 / 1961 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1890 / 1889 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 43
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 24
- Digit product
- 432
- Digital root
- 6
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,691
- Flips to (rotate 180°)
- 8,961
- Recamán's sequence
- a(3,815) = 1,968
- Square (n²)
- 3,873,024
- Cube (n³)
- 7,622,111,232
- Divisor count
- 20
- σ(n) — sum of divisors
- 5,208
- φ(n) — Euler's totient
- 640
- Sum of prime factors
- 52
Primality
Prime factorization: 2 4 × 3 × 41
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand nine hundred sixty-eight
- Ordinal
- 1968th
- Roman numeral
- MCMLXVIII
- Binary
- 11110110000
- Octal
- 3660
- Hexadecimal
- 0x7B0
- Base64
- B7A=
- One's complement
- 63,567 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡξηʹ
- Mayan (base 20)
- 𝋤·𝋲·𝋨
- Chinese
- 一千九百六十八
- Chinese (financial)
- 壹仟玖佰陸拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,968 = 1
- e — Euler's number (e)
- Digit 1,968 = 7
- φ — Golden ratio (φ)
- Digit 1,968 = 0
- √2 — Pythagoras's (√2)
- Digit 1,968 = 2
- ln 2 — Natural log of 2
- Digit 1,968 = 4
- γ — Euler-Mascheroni (γ)
- Digit 1,968 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1968, here are decompositions:
- 17 + 1951 = 1968
- 19 + 1949 = 1968
- 37 + 1931 = 1968
- 61 + 1907 = 1968
- 67 + 1901 = 1968
- 79 + 1889 = 1968
- 89 + 1879 = 1968
- 97 + 1871 = 1968
Showing the first eight; more decompositions exist.
UTF-8 encoding: DE B0 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.176.
- Address
- 0.0.7.176
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.176
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1968 first appears in π at position 11,756 of the decimal expansion (the 11,756ordinal-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.