Number

1,949

1,949 is a prime, odd, a calendar year.

Arithmetic Number Chen Prime Deficient Number Emirp Evil Number Prime Pythagorean Prime Recamán's Sequence Squarefree Twin Prime Year

Notable events — 1949 AD

Apr 4 Twelve nations sign the North Atlantic Treaty, founding NATO.
May 23 The Federal Republic of Germany (West Germany) is formally established.
Aug 29 The Soviet Union conducts its first atomic bomb test.
Oct 1 Mao Zedong proclaims the People's Republic of China in Beijing.
Oct 7 The German Democratic Republic (East Germany) is established.

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, 1949
Ended on: Saturday
December 31, 1949
Friday the 13ths: 1
One Friday the 13th this year.
Easter Sunday: April 17
Sunday, April 17, 1949
Decade: 1940s
1940–1949
Century: 20th century
1901–2000
Millennium: 2nd millennium
1001–2000
Years ago: 77
77 years before 2026.

In other calendars

Hebrew: 5709 / 5710 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 1368 / 1369 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Earth zodiac:Ox
Sexagenary cycle position 26 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 2492 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 1327 / 1328 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1941 / 1942 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1871 / 1870 Saka
Indian national calendar; year starts in March.
Japanese: Shōwa 24
Reign-era counting from the start of each emperor's reign.

Properties

Parity: Odd
Digit count: 4
Digit sum: 23
Digit product: 324
Digital root: 5
Palindrome: No
Bit width: 11 bits
Reversed: 9,491
Recamán's sequence: a(3,853) = 1,949
Square (n²): 3,798,601
Cube (n³): 7,403,473,349
Divisor count: 2
σ(n) — sum of divisors: 1,950
φ(n) — Euler's totient: 1,948

Primality

1,949 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 1949

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 1,949)

1 × 1949

First multiples

1,949 · 3,898 (double) · 5,847 · 7,796 · 9,745 · 11,694 · 13,643 · 15,592 · 17,541 · 19,490

Sums & aliquot sequence

As a sum of two squares: 10² + 43²

As consecutive integers: 974 + 975

Representations

In words: one thousand nine hundred forty-nine
Ordinal: 1949th
Roman numeral: MCMXLIX
Binary: 11110011101
Octal: 3635
Hexadecimal: 0x79D
Base64: B50=
One's complement: 63,586 (16-bit)

In other bases

ternary (3) 2200012

quaternary (4) 132131

quinary (5) 30244

senary (6) 13005

septenary (7) 5453

nonary (9) 2605

undecimal (11) 1512

duodecimal (12) 1165

tridecimal (13) b6c

tetradecimal (14) 9d3

pentadecimal (15) 89e

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵αϡμθʹ
Mayan (base 20): 𝋤·𝋱·𝋩
Chinese: 一千九百四十九
Chinese (financial): 壹仟玖佰肆拾玖

In other modern scripts

Eastern Arabic ١٩٤٩ Devanagari १९४९ Bengali ১৯৪৯ Tamil ௧௯௪௯ Thai ๑๙๔๙ Tibetan ༡༩༤༩ Khmer ១៩៤៩ Lao ໑໙໔໙ Burmese ၁၉၄၉

Digit at this position in famous constants

π — Pi (π): Digit 1,949 = 2
e — Euler's number (e): Digit 1,949 = 1
φ — Golden ratio (φ): Digit 1,949 = 8
√2 — Pythagoras's (√2): Digit 1,949 = 8
ln 2 — Natural log of 2: Digit 1,949 = 1
γ — Euler-Mascheroni (γ): Digit 1,949 = 4

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 1,933 (gap of 16)
Next prime: 1,951 (gap of 2)

Pair status: twin with 1951.

Unicode codepoint

Thaana Letter Sheenu

U+079D

Other letter (Lo)

UTF-8 encoding: DE 9D (2 bytes).

Lookup U+079D on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00079D

RGB(0, 7, 157)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.157.

Address: 0.0.7.157
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.7.157

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 1949 first appears in π at position 495 of the decimal expansion (the 495ordinal-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.

Look up 1949 on Pi Search ↗