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6281909441 = 972667649
BaseRepresentation
bin1011101100110111…
…00101010011000001
3121012210112001201122
411312123211103001
5100331132100231
62515203042025
7311446230533
oct56633452301
917183461648
106281909441
112733a795a5
121273970315
137916015a2
14438433853
1526b77177b
hex1766e54c1

6281909441 has 6 divisors (see below), whose sum is σ = 6347348550. Its totient is φ = 6217138176.

The previous prime is 6281909407. The next prime is 6281909489. The reversal of 6281909441 is 1449091826.

It can be written as a sum of positive squares in 3 ways, for example, as 567154225 + 5714755216 = 23815^2 + 75596^2 .

It is a de Polignac number, because none of the positive numbers 2k-6281909441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6281909392 and 6281909401.

It is not an unprimeable number, because it can be changed into a prime (6281908441) 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 5 ways as a sum of consecutive naturals, for example, 324416 + ... + 343233.

It is an arithmetic number, because the mean of its divisors is an integer number (1057891425).

Almost surely, 26281909441 is an apocalyptic number.

It is an amenable number.

6281909441 is a deficient number, since it is larger than the sum of its proper divisors (65439109).

6281909441 is an frugal number, since it uses more digits than its factorization.

6281909441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667843 (or 667746 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 6281909441 is about 79258.4975948951. The cubic root of 6281909441 is about 1845.1452397518.

The spelling of 6281909441 in words is "six billion, two hundred eighty-one million, nine hundred nine thousand, four hundred forty-one".

Divisors: 1 97 9409 667649 64761953 6281909441