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18793123417 = 317103957059
BaseRepresentation
bin10001100000001010…
…000100111001011001
31210111201120120211001
4101200022010321121
5301442014422132
612344453505001
71233465625165
oct214012047131
953451516731
1018793123417
117a74256862
123785942161
131a06646493
14ca3cc5ca5
1574ed22ce7
hex460284e59

18793123417 has 8 divisors (see below), whose sum is σ = 18870883200. Its totient is φ = 18715480464.

The previous prime is 18793123403. The next prime is 18793123439. The reversal of 18793123417 is 71432139781.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-18793123417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18793123717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300834 + ... + 357892.

It is an arithmetic number, because the mean of its divisors is an integer number (2358860400).

Almost surely, 218793123417 is an apocalyptic number.

It is an amenable number.

18793123417 is a deficient number, since it is larger than the sum of its proper divisors (77759783).

18793123417 is a wasteful number, since it uses less digits than its factorization.

18793123417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58415.

The product of its digits is 254016, while the sum is 46.

The spelling of 18793123417 in words is "eighteen billion, seven hundred ninety-three million, one hundred twenty-three thousand, four hundred seventeen".

Divisors: 1 317 1039 57059 329363 18087703 59284301 18793123417