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18813206082 = 2311289491593
BaseRepresentation
bin10001100001010110…
…101011111001000010
31210120010100220001110
4101201112223321002
5302012140043312
612350452144150
71234131420216
oct214126537102
953503326043
1018813206082
117a84623200
123790608056
131a0a858408
14ca6832946
1575198d43c
hex4615abe42

18813206082 has 96 divisors (see below), whose sum is σ = 41978502720. Its totient is φ = 5615948800.

The previous prime is 18813206059. The next prime is 18813206099. The reversal of 18813206082 is 28060231881.

It is a self number, because there is not a number n which added to its sum of digits gives 18813206082.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31725178 + ... + 31725770.

It is an arithmetic number, because the mean of its divisors is an integer number (437276070).

Almost surely, 218813206082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18813206082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20989251360).

18813206082 is an abundant number, since it is smaller than the sum of its proper divisors (23165296638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18813206082 is a wasteful number, since it uses less digits than its factorization.

18813206082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 18813206082 in words is "eighteen billion, eight hundred thirteen million, two hundred six thousand, eighty-two".

Divisors: 1 2 3 6 11 22 33 66 89 121 178 242 267 363 491 534 593 726 979 982 1186 1473 1779 1958 2937 2946 3558 5401 5874 6523 10769 10802 13046 16203 19569 21538 32307 32406 39138 43699 52777 59411 64614 71753 87398 105554 118822 131097 143506 158331 178233 215259 262194 291163 316662 356466 430518 480689 580547 582326 873489 961378 1161094 1442067 1741641 1746978 2884134 3202793 3483282 5287579 6386017 6405586 9608379 10575158 12772034 15862737 19158051 19216758 25913507 31725474 35230723 38316102 51827014 70461446 77740521 105692169 155481042 211384338 285048577 570097154 855145731 1710291462 3135534347 6271068694 9406603041 18813206082