1,965
1,965 is a composite number, odd, a calendar year.
Notable events — 1965 AD
- Feb 21 Malcolm X is assassinated at the Audubon Ballroom in Harlem.
- Mar 7 Alabama state troopers attack civil-rights marchers on “Bloody Sunday” in Selma.
- Mar 8 The first US ground combat troops arrive in Vietnam.
- Mar 18 Soviet cosmonaut Alexei Leonov performs the first spacewalk.
- Aug 11 The Watts riots erupt in Los Angeles after a traffic stop.
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
-
Friday
January 1, 1965
- Ended on
-
Friday
December 31, 1965
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 18
Sunday, April 18, 1965
- Decade
-
1960s
1960–1969
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
61
61 years before 2026.
In other calendars
- Hebrew
-
5725 / 5726 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1384 / 1385 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Wood zodiac:Snake
Sexagenary cycle position 42 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2508 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1343 / 1344 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1957 / 1958 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1887 / 1886 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 40
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 21
- Digit product
- 270
- Digital root
- 3
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 5,691
- Recamán's sequence
- a(3,821) = 1,965
- Square (n²)
- 3,861,225
- Cube (n³)
- 7,587,307,125
- Divisor count
- 8
- σ(n) — sum of divisors
- 3,168
- φ(n) — Euler's totient
- 1,040
- Sum of prime factors
- 139
Primality
Prime factorization: 3 × 5 × 131
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand nine hundred sixty-five
- Ordinal
- 1965th
- Roman numeral
- MCMLXV
- Binary
- 11110101101
- Octal
- 3655
- Hexadecimal
- 0x7AD
- Base64
- B60=
- One's complement
- 63,570 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡξεʹ
- Mayan (base 20)
- 𝋤·𝋲·𝋥
- Chinese
- 一千九百六十五
- Chinese (financial)
- 壹仟玖佰陸拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,965 = 6
- e — Euler's number (e)
- Digit 1,965 = 2
- φ — Golden ratio (φ)
- Digit 1,965 = 6
- √2 — Pythagoras's (√2)
- Digit 1,965 = 8
- ln 2 — Natural log of 2
- Digit 1,965 = 7
- γ — Euler-Mascheroni (γ)
- Digit 1,965 = 2
Also seen as
UTF-8 encoding: DE AD (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.173.
- Address
- 0.0.7.173
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.173
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1965 first appears in π at position 1,881 of the decimal expansion (the 1,881ordinal-suffix:st 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.