1,600
1,600 is a composite number, even, a calendar year.
Notable events — 1600 AD
- Feb 17 Giordano Bruno is burned at the stake in Rome.
- Dec 31 Queen Elizabeth I charters the English East India Company.
- Oct 21 Tokugawa Ieyasu wins the Battle of Sekigahara, opening the Edo period in Japan.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
Year facts
- Year type
-
Leap year
Divisible by 400 (Gregorian leap-year rule exception to the century rule).
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Saturday
January 1, 1600
- Ended on
-
Sunday
December 31, 1600
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 2
Sunday, April 2, 1600
- Decade
-
1600s
1600–1609
- Century
-
16th century
1501–1600
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
426
426 years before 2026.
In other calendars
- Hebrew
-
5360 / 5361 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1008 / 1009 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Rat
Sexagenary cycle position 37 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2143 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
978 / 979 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1592 / 1593 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1522 / 1521 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 7
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 61
- Flips to (rotate 180°)
- 91
- Recamán's sequence
- a(1,344) = 1,600
- Square (n²)
- 2,560,000
- Cube (n³)
- 4,096,000,000
- Square root (√n)
- 40
- Divisor count
- 21
- σ(n) — sum of divisors
- 3,937
- φ(n) — Euler's totient
- 640
- Sum of prime factors
- 22
Primality
Prime factorization: 2 6 × 5 2
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand six hundred
- Ordinal
- 1600th
- Roman numeral
- MDC
- Binary
- 11001000000
- Octal
- 3100
- Hexadecimal
- 0x640
- Base64
- BkA=
- One's complement
- 63,935 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢
- Greek (Milesian)
- ͵αχʹ
- Mayan (base 20)
- 𝋤·𝋠·𝋠
- Chinese
- 一千六百
- Chinese (financial)
- 壹仟陸佰
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,600 = 0
- e — Euler's number (e)
- Digit 1,600 = 6
- φ — Golden ratio (φ)
- Digit 1,600 = 1
- √2 — Pythagoras's (√2)
- Digit 1,600 = 9
- ln 2 — Natural log of 2
- Digit 1,600 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,600 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1600, here are decompositions:
- 3 + 1597 = 1600
- 17 + 1583 = 1600
- 29 + 1571 = 1600
- 41 + 1559 = 1600
- 47 + 1553 = 1600
- 89 + 1511 = 1600
- 101 + 1499 = 1600
- 107 + 1493 = 1600
Showing the first eight; more decompositions exist.
UTF-8 encoding: D9 80 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.64.
- Address
- 0.0.6.64
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.64
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1600 first appears in π at position 22,222 of the decimal expansion (the 22,222ordinal-suffix:nd 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.