1,958
1,958 is a composite number, even, a calendar year.
Notable events — 1958 AD
- Jan 31 The US launches Explorer 1, its first satellite.
- Jul 29 President Eisenhower signs the act establishing NASA.
- Sep 12 Jack Kilby demonstrates the first working integrated circuit at Texas Instruments.
- Oct 9 Pope Pius XII dies; John XXIII is elected three weeks later.
- Oct 28 Mao launches the Great Leap Forward, leading to mass famine.
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
-
Wednesday
January 1, 1958
- Ended on
-
Wednesday
December 31, 1958
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 6
Sunday, April 6, 1958
- Decade
-
1950s
1950–1959
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
68
68 years before 2026.
- FIFA World Cup
-
Yes
Men's FIFA World Cup is held every four years (skipped 1942 and 1946 due to WWII).
In other calendars
- Hebrew
-
5718 / 5719 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1377 / 1378 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Dog
Sexagenary cycle position 35 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2501 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1336 / 1337 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1950 / 1951 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1880 / 1879 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 33
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 23
- Digit product
- 360
- Digital root
- 5
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,591
- Recamán's sequence
- a(3,835) = 1,958
- Square (n²)
- 3,833,764
- Cube (n³)
- 7,506,509,912
- Divisor count
- 8
- σ(n) — sum of divisors
- 3,240
- φ(n) — Euler's totient
- 880
- Sum of prime factors
- 102
Primality
Prime factorization: 2 × 11 × 89
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand nine hundred fifty-eight
- Ordinal
- 1958th
- Roman numeral
- MCMLVIII
- Binary
- 11110100110
- Octal
- 3646
- Hexadecimal
- 0x7A6
- Base64
- B6Y=
- One's complement
- 63,577 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡνηʹ
- Mayan (base 20)
- 𝋤·𝋱·𝋲
- Chinese
- 一千九百五十八
- Chinese (financial)
- 壹仟玖佰伍拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,958 = 6
- e — Euler's number (e)
- Digit 1,958 = 0
- φ — Golden ratio (φ)
- Digit 1,958 = 8
- √2 — Pythagoras's (√2)
- Digit 1,958 = 4
- ln 2 — Natural log of 2
- Digit 1,958 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,958 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1958, here are decompositions:
- 7 + 1951 = 1958
- 79 + 1879 = 1958
- 97 + 1861 = 1958
- 127 + 1831 = 1958
- 157 + 1801 = 1958
- 181 + 1777 = 1958
- 199 + 1759 = 1958
- 211 + 1747 = 1958
Showing the first eight; more decompositions exist.
UTF-8 encoding: DE A6 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.166.
- Address
- 0.0.7.166
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.166
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1958 first appears in π at position 14,609 of the decimal expansion (the 14,609ordinal-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.