1,964
1,964 is a composite number, even, a calendar year.
Notable events — 1964 AD
- Feb 9 The Beatles make their US television debut on The Ed Sullivan Show.
- Mar 27 The Great Alaska earthquake (magnitude 9.2) is the most powerful ever recorded in North America.
- Jul 2 President Johnson signs the Civil Rights Act, outlawing racial segregation.
- Aug 4 The Gulf of Tonkin incident escalates US involvement in the Vietnam War.
- Oct 16 China detonates its first atomic bomb at Lop Nur.
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
-
Wednesday
January 1, 1964
- Ended on
-
Thursday
December 31, 1964
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Easter Sunday
-
March 29
Sunday, March 29, 1964
- Decade
-
1960s
1960–1969
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
62
62 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
-
5724 / 5725 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1383 / 1384 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Wood zodiac:Dragon
Sexagenary cycle position 41 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2507 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1342 / 1343 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1956 / 1957 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1886 / 1885 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 39
Reign-era counting from the start of each emperor's reign.
Properties
Primality
Prime factorization: 2 2 × 491
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand nine hundred sixty-four
- Ordinal
- 1964th
- Roman numeral
- MCMLXIV
- Binary
- 11110101100
- Octal
- 3654
- Hexadecimal
- 0x7AC
- Base64
- B6w=
- One's complement
- 63,571 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡξδʹ
- Mayan (base 20)
- 𝋤·𝋲·𝋤
- Chinese
- 一千九百六十四
- Chinese (financial)
- 壹仟玖佰陸拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,964 = 9
- e — Euler's number (e)
- Digit 1,964 = 6
- φ — Golden ratio (φ)
- Digit 1,964 = 8
- √2 — Pythagoras's (√2)
- Digit 1,964 = 4
- ln 2 — Natural log of 2
- Digit 1,964 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,964 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1964, here are decompositions:
- 13 + 1951 = 1964
- 31 + 1933 = 1964
- 97 + 1867 = 1964
- 103 + 1861 = 1964
- 163 + 1801 = 1964
- 181 + 1783 = 1964
- 211 + 1753 = 1964
- 223 + 1741 = 1964
Showing the first eight; more decompositions exist.
UTF-8 encoding: DE AC (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.172.
- Address
- 0.0.7.172
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.172
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1964 first appears in π at position 198 of the decimal expansion (the 198ordinal-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.