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18800381842 = 211854562811
BaseRepresentation
bin10001100000100101…
…110000111110010010
31210112020020100111121
4101200211300332102
5302000344204332
612345313232454
71233614415604
oct214045607622
953466210447
1018800381842
117a78364160
12378826272a
131a07cb81c8
14ca4c55174
157507a8797
hex460970f92

18800381842 has 8 divisors (see below), whose sum is σ = 30764261232. Its totient is φ = 8545628100.

The previous prime is 18800381827. The next prime is 18800381851. The reversal of 18800381842 is 24818300881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427281384 + ... + 427281427.

It is an arithmetic number, because the mean of its divisors is an integer number (3845532654).

Almost surely, 218800381842 is an apocalyptic number.

18800381842 is a deficient number, since it is larger than the sum of its proper divisors (11963879390).

18800381842 is a wasteful number, since it uses less digits than its factorization.

18800381842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854562824.

The product of its (nonzero) digits is 98304, while the sum is 43.

The spelling of 18800381842 in words is "eighteen billion, eight hundred million, three hundred eighty-one thousand, eight hundred forty-two".

Divisors: 1 2 11 22 854562811 1709125622 9400190921 18800381842