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8143808111 = 476111932381
BaseRepresentation
bin1111001010110100…
…01010011001101111
3210000120000022112122
413211122022121233
5113134303324421
63424034023155
7405545140535
oct74532123157
923016008478
108143808111
1134a9a7062a
1216b3417abb
139ca28488a
14573820155
15329e552ab
hex1e568a66f

8143808111 has 16 divisors (see below), whose sum is σ = 8464065408. Its totient is φ = 7830009600.

The previous prime is 8143808089. The next prime is 8143808203. The reversal of 8143808111 is 1118083418.

It is a cyclic number.

It is not a de Polignac number, because 8143808111 - 26 = 8143808047 is a prime.

It is a super-2 number, since 2×81438081112 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8143808411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3419141 + ... + 3421521.

It is an arithmetic number, because the mean of its divisors is an integer number (529004088).

Almost surely, 28143808111 is an apocalyptic number.

8143808111 is a deficient number, since it is larger than the sum of its proper divisors (320257297).

8143808111 is a wasteful number, since it uses less digits than its factorization.

8143808111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682.

The product of its (nonzero) digits is 6144, while the sum is 35.

The square root of 8143808111 is about 90243.0502088665. The cubic root of 8143808111 is about 2011.9129096543.

The spelling of 8143808111 in words is "eight billion, one hundred forty-three million, eight hundred eight thousand, one hundred eleven".

Divisors: 1 47 61 1193 2381 2867 56071 72773 111907 145241 2840533 3420331 6826327 133505051 173272513 8143808111