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1688282899 = 4373537841
BaseRepresentation
bin110010010100001…
…0010011100010011
311100122210122202021
41210220102130103
511424200023044
6435305432311
756560111402
oct14450223423
94318718667
101688282899
11796a9aa26
123b149b697
1320ba06284
14120315639
159d33be84
hex64a12713

1688282899 has 8 divisors (see below), whose sum is σ = 1751213552. Its totient is φ = 1626428160.

The previous prime is 1688282887. The next prime is 1688282929. The reversal of 1688282899 is 9982828861.

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 1688282899 - 217 = 1688151827 is a prime.

It is a super-3 number, since 3×16882828993 (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1688282809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265782 + ... + 272059.

It is an arithmetic number, because the mean of its divisors is an integer number (218901694).

Almost surely, 21688282899 is an apocalyptic number.

1688282899 is a deficient number, since it is larger than the sum of its proper divisors (62930653).

1688282899 is an equidigital number, since it uses as much as digits as its factorization.

1688282899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537957.

The product of its digits is 7962624, while the sum is 61.

The square root of 1688282899 is about 41088.7198510735. The cubic root of 1688282899 is about 1190.7348752805.

The spelling of 1688282899 in words is "one billion, six hundred eighty-eight million, two hundred eighty-two thousand, eight hundred ninety-nine".

Divisors: 1 43 73 3139 537841 23127163 39262393 1688282899