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18039122682 = 2374191911399
BaseRepresentation
bin10000110011001101…
…110010101011111010
31201120011210101020220
4100303031302223322
5243421003411212
612142001000510
71206012004260
oct206315625372
951504711226
1018039122682
117717683959
1235b5323136
13191637a9b9
14c31ad2430
15708a3538c
hex433372afa

18039122682 has 64 divisors (see below), whose sum is σ = 42287616000. Its totient is φ = 5022414720.

The previous prime is 18039122681. The next prime is 18039122719. The reversal of 18039122682 is 28622193081.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (18039122681) 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 31 ways as a sum of consecutive naturals, for example, 1576819 + ... + 1588217.

It is an arithmetic number, because the mean of its divisors is an integer number (660744000).

Almost surely, 218039122682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18039122682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21143808000).

18039122682 is an abundant number, since it is smaller than the sum of its proper divisors (24248493318).

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

18039122682 is a wasteful number, since it uses less digits than its factorization.

18039122682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12371.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 18039122682 in words is "eighteen billion, thirty-nine million, one hundred twenty-two thousand, six hundred eighty-two".

Divisors: 1 2 3 6 7 14 21 41 42 82 123 246 287 574 861 919 1722 1838 2757 5514 6433 11399 12866 19299 22798 34197 37679 38598 68394 75358 79793 113037 159586 226074 239379 263753 467359 478758 527506 791259 934718 1402077 1582518 2804154 3271513 6543026 9814539 10475681 19629078 20951362 31427043 62854086 73329767 146659534 219989301 429502921 439978602 859005842 1288508763 2577017526 3006520447 6013040894 9019561341 18039122682