1,338
1,338 is a composite number, even, a calendar year.
Historical context — 1338 AD
Calendar year
Year 1338 (MCCCXXXVIII) was a common year starting on Thursday of the Julian calendar.
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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, 1338
- Ended on
-
Wednesday
December 31, 1338
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1330s
1330–1339
- Century
-
14th century
1301–1400
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
688
688 years before 2026.
In other calendars
- Hebrew
-
5098 / 5099 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
738 / 739 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
-
1881 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
716 / 717 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1330 / 1331 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1260 / 1259 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 15
- Digit product
- 72
- Digital root
- 6
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,331
- Recamán's sequence
- a(16,459) = 1,338
- Square (n²)
- 1,790,244
- Cube (n³)
- 2,395,346,472
- Divisor count
- 8
- σ(n) — sum of divisors
- 2,688
- φ(n) — Euler's totient
- 444
- Sum of prime factors
- 228
Primality
Prime factorization: 2 × 3 × 223
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand three hundred thirty-eight
- Ordinal
- 1338th
- Roman numeral
- MCCCXXXVIII
- Binary
- 10100111010
- Octal
- 2472
- Hexadecimal
- 0x53A
- Base64
- BTo=
- One's complement
- 64,197 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ατληʹ
- Mayan (base 20)
- 𝋣·𝋦·𝋲
- Chinese
- 一千三百三十八
- Chinese (financial)
- 壹仟參佰參拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,338 = 5
- e — Euler's number (e)
- Digit 1,338 = 5
- φ — Golden ratio (φ)
- Digit 1,338 = 2
- √2 — Pythagoras's (√2)
- Digit 1,338 = 2
- ln 2 — Natural log of 2
- Digit 1,338 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,338 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1338, here are decompositions:
- 11 + 1327 = 1338
- 17 + 1321 = 1338
- 19 + 1319 = 1338
- 31 + 1307 = 1338
- 37 + 1301 = 1338
- 41 + 1297 = 1338
- 47 + 1291 = 1338
- 59 + 1279 = 1338
Showing the first eight; more decompositions exist.
UTF-8 encoding: D4 BA (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.58.
- Address
- 0.0.5.58
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.58
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1338 first appears in π at position 14,093 of the decimal expansion (the 14,093ordinal-suffix:rd 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.