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18690792286 = 217952208917
BaseRepresentation
bin10001011010000011…
…101101101101011110
31210020121000121220011
4101122003231231132
5301234320323121
612330400313434
71231114053535
oct213203555536
953217017804
1018690792286
117a21512981
12375761287a
1319bb39790a
14c9448931c
15745d5c7e1
hex45a0edb5e

18690792286 has 8 divisors (see below), whose sum is σ = 28192815720. Its totient is φ = 9293187048.

The previous prime is 18690792247. The next prime is 18690792299. The reversal of 18690792286 is 68229709681.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18690792286.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26104101 + ... + 26104816.

It is an arithmetic number, because the mean of its divisors is an integer number (3524101965).

Almost surely, 218690792286 is an apocalyptic number.

18690792286 is a deficient number, since it is larger than the sum of its proper divisors (9502023434).

18690792286 is a wasteful number, since it uses less digits than its factorization.

18690792286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52209098.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 18690792286 in words is "eighteen billion, six hundred ninety million, seven hundred ninety-two thousand, two hundred eighty-six".

Divisors: 1 2 179 358 52208917 104417834 9345396143 18690792286