1,938
1,938 is a composite number, even, a calendar year.
Notable events — 1938 AD
- Mar 12 Nazi Germany annexes Austria in the Anschluss.
- Sep 30 The Munich Agreement cedes Czechoslovakia's Sudetenland to Germany.
- Oct 30 Orson Welles's War of the Worlds radio broadcast causes panic.
- Nov 9 Kristallnacht: organized Nazi violence destroys Jewish businesses and synagogues across Germany.
- Dec 27 Nuclear fission is reported by Hahn and Strassmann in Berlin.
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
-
Saturday
January 1, 1938
- Ended on
-
Saturday
December 31, 1938
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 17
Sunday, April 17, 1938
- Decade
-
1930s
1930–1939
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
88
88 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
-
5698 / 5699 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1356 / 1357 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
-
2481 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1316 / 1317 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1930 / 1931 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1860 / 1859 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 13
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 21
- Digit product
- 216
- Digital root
- 3
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,391
- Recamán's sequence
- a(519) = 1,938
- Square (n²)
- 3,755,844
- Cube (n³)
- 7,278,825,672
- Divisor count
- 16
- σ(n) — sum of divisors
- 4,320
- φ(n) — Euler's totient
- 576
- Sum of prime factors
- 41
Primality
Prime factorization: 2 × 3 × 17 × 19
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand nine hundred thirty-eight
- Ordinal
- 1938th
- Roman numeral
- MCMXXXVIII
- Binary
- 11110010010
- Octal
- 3622
- Hexadecimal
- 0x792
- Base64
- B5I=
- One's complement
- 63,597 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡληʹ
- Mayan (base 20)
- 𝋤·𝋰·𝋲
- Chinese
- 一千九百三十八
- Chinese (financial)
- 壹仟玖佰參拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,938 = 5
- e — Euler's number (e)
- Digit 1,938 = 8
- φ — Golden ratio (φ)
- Digit 1,938 = 0
- √2 — Pythagoras's (√2)
- Digit 1,938 = 7
- ln 2 — Natural log of 2
- Digit 1,938 = 9
- γ — Euler-Mascheroni (γ)
- Digit 1,938 = 3
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1938, here are decompositions:
- 5 + 1933 = 1938
- 7 + 1931 = 1938
- 31 + 1907 = 1938
- 37 + 1901 = 1938
- 59 + 1879 = 1938
- 61 + 1877 = 1938
- 67 + 1871 = 1938
- 71 + 1867 = 1938
Showing the first eight; more decompositions exist.
UTF-8 encoding: DE 92 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.146.
- Address
- 0.0.7.146
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.146
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1938 first appears in π at position 168 of the decimal expansion (the 168ordinal-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.