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8000000001 = 3272329613121
BaseRepresentation
bin1110111001101011…
…00101000000000001
3202122112102002220100
413130311211000001
5112341000000001
63401455433013
7402150610110
oct73465450001
922575362810
108000000001
113435878454
121673225769
139a6543116
1455c6a7c77
1531c4ea586
hex1dcd65001

8000000001 has 96 divisors (see below), whose sum is σ = 14494072320. Its totient is φ = 4151347200.

The previous prime is 7999999957. The next prime is 8000000011. The reversal of 8000000001 is 1000000008.

It is a Cunningham number, because it is equal to 20003+1.

It is not a de Polignac number, because 8000000001 - 26 = 7999999937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a self number, because there is not a number n which added to its sum of digits gives 8000000001.

It is not an unprimeable number, because it can be changed into a prime (8000000011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2561721 + ... + 2564841.

It is an arithmetic number, because the mean of its divisors is an integer number (150979920).

Almost surely, 28000000001 is an apocalyptic number.

It is an amenable number.

8000000001 is a deficient number, since it is larger than the sum of its proper divisors (6494072319).

8000000001 is a wasteful number, since it uses less digits than its factorization.

8000000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247 (or 3244 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 8000000001 is about 89442.7191055818. The cubic root of 8000000001 is about 2000.0000000833. Note that the first 7 decimals are identical.

Adding to 8000000001 its reverse (1000000008), we get a palindrome (9000000009).

The spelling of 8000000001 in words is "eight billion, one", and thus it is an aban number and an uban number.

Divisors: 1 3 7 9 21 23 29 61 63 69 87 161 183 203 207 261 427 483 549 609 667 1281 1403 1449 1769 1827 2001 3121 3843 4209 4669 5307 6003 9363 9821 12383 12627 14007 15921 21847 28089 29463 37149 40687 42021 65541 71783 88389 90509 111447 122061 190381 196623 215349 271527 284809 366183 502481 571143 633563 646047 814581 854427 1332667 1507443 1713429 1900689 2081707 2563281 3998001 4378763 4522329 5521049 5702067 6245121 11994003 13136289 14571949 16563147 18735363 30651341 38647343 39408867 43715847 49689441 91954023 115942029 126984127 131147541 275862069 347826087 380952381 888888889 1142857143 2666666667 8000000001