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18483802188 = 2231933796853
BaseRepresentation
bin10001001101101110…
…000111000001001100
31202201011112102212020
4101031232013001030
5300323323132223
612254044010140
71223021504055
oct211556070114
952634472766
1018483802188
117925696185
1236ba230950
131987533a77
14c74ba772c
15732ac21e3
hex44db8704c

18483802188 has 24 divisors (see below), whose sum is σ = 43151237808. Its totient is φ = 6158072256.

The previous prime is 18483802171. The next prime is 18483802217. The reversal of 18483802188 is 88120838481.

It is a super-2 number, since 2×184838021882 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18483802188.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375231 + ... + 421622.

It is an arithmetic number, because the mean of its divisors is an integer number (1797968242).

Almost surely, 218483802188 is an apocalyptic number.

It is an amenable number.

18483802188 is an abundant number, since it is smaller than the sum of its proper divisors (24667435620).

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

18483802188 is a wasteful number, since it uses less digits than its factorization.

18483802188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798793 (or 798791 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 51.

The spelling of 18483802188 in words is "eighteen billion, four hundred eighty-three million, eight hundred two thousand, one hundred eighty-eight".

Divisors: 1 2 3 4 6 12 1933 3866 5799 7732 11598 23196 796853 1593706 2390559 3187412 4781118 9562236 1540316849 3080633698 4620950547 6161267396 9241901094 18483802188