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6854291381 = 73371290473
BaseRepresentation
bin1100110001000110…
…00010111110110101
3122200200120002010202
412120203002332311
5103014144311011
63052051130245
7331566341540
oct63043027665
918620502122
106854291381
1129a8083623
1213b35a3985
1385307a422
1449046b857
152a1b3623b
hex1988c2fb5

6854291381 has 8 divisors (see below), whose sum is σ = 7835826624. Its totient is φ = 5873343840.

The previous prime is 6854291369. The next prime is 6854291383. The reversal of 6854291381 is 1831924586.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2k-6854291381 is a prime.

It is a super-2 number, since 2×68542913812 = 93962620671301774322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6854291383) 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, 121640 + ... + 168833.

It is an arithmetic number, because the mean of its divisors is an integer number (979478328).

Almost surely, 26854291381 is an apocalyptic number.

It is an amenable number.

6854291381 is a deficient number, since it is larger than the sum of its proper divisors (981535243).

6854291381 is a wasteful number, since it uses less digits than its factorization.

6854291381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293851.

The product of its digits is 414720, while the sum is 47.

The square root of 6854291381 is about 82790.6479078404. The cubic root of 6854291381 is about 1899.5651249418.

The spelling of 6854291381 in words is "six billion, eight hundred fifty-four million, two hundred ninety-one thousand, three hundred eighty-one".

Divisors: 1 7 3371 23597 290473 2033311 979184483 6854291381