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2669471369 = 50910335077
BaseRepresentation
bin1001111100011100…
…1110011010001001
320220001002012021222
42133013032122021
520431341040434
61120520011425
7123103063235
oct23707163211
96801065258
102669471369
11114a935394
12626000b75
13337087c76
141b47675c5
1510955472e
hex9f1ce689

2669471369 has 8 divisors (see below), whose sum is σ = 2677832520. Its totient is φ = 2661123456.

The previous prime is 2669471351. The next prime is 2669471377. The reversal of 2669471369 is 9631749662.

It can be written as a sum of positive squares in 4 ways, for example, as 2262238969 + 407232400 = 47563^2 + 20180^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2669471369 - 28 = 2669471113 is a prime.

It is a super-2 number, since 2×26694713692 = 14252154779821468322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2669471369.

It is not an unprimeable number, because it can be changed into a prime (2669471069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523259 + ... + 528335.

It is an arithmetic number, because the mean of its divisors is an integer number (334729065).

Almost surely, 22669471369 is an apocalyptic number.

It is an amenable number.

2669471369 is a deficient number, since it is larger than the sum of its proper divisors (8361151).

2669471369 is a wasteful number, since it uses less digits than its factorization.

2669471369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6619.

The product of its digits is 2939328, while the sum is 53.

The square root of 2669471369 is about 51666.9272262247. The cubic root of 2669471369 is about 1387.2085463522.

The spelling of 2669471369 in words is "two billion, six hundred sixty-nine million, four hundred seventy-one thousand, three hundred sixty-nine".

Divisors: 1 509 1033 5077 525797 2584193 5244541 2669471369