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17983388386 = 228331772771
BaseRepresentation
bin10000101111111001…
…001011101011100010
31201102021220210011201
4100233321023223202
5243312221412021
612132250231414
71204434164515
oct205771135342
951367823151
1017983388386
117699176957
12359a72556a
131907965522
14c28544d7c
15703bc6591
hex42fe4bae2

17983388386 has 8 divisors (see below), whose sum is σ = 27070401744. Its totient is φ = 8959921140.

The previous prime is 17983388347. The next prime is 17983388407. The reversal of 17983388386 is 68388338971.

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

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, 15885820 + ... + 15886951.

It is an arithmetic number, because the mean of its divisors is an integer number (3383800218).

Almost surely, 217983388386 is an apocalyptic number.

17983388386 is a deficient number, since it is larger than the sum of its proper divisors (9087013358).

17983388386 is a wasteful number, since it uses less digits than its factorization.

17983388386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31773056.

The product of its digits is 41803776, while the sum is 64.

The spelling of 17983388386 in words is "seventeen billion, nine hundred eighty-three million, three hundred eighty-eight thousand, three hundred eighty-six".

Divisors: 1 2 283 566 31772771 63545542 8991694193 17983388386