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19100018317 = 237487110917
BaseRepresentation
bin10001110010011100…
…110010011010001101
31211022010001110110211
4101302130302122031
5303104101041232
612435135402421
71244213322412
oct216234623215
954263043424
1019100018317
11811150a506
123850683411
131a550b96b3
14cd2972109
1576bc44a47
hex47273268d

19100018317 has 8 divisors (see below), whose sum is σ = 19933295616. Its totient is φ = 18266977872.

The previous prime is 19100018291. The next prime is 19100018323. The reversal of 19100018317 is 71381000191.

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-19100018317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19100018417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116743 + ... + 227659.

It is an arithmetic number, because the mean of its divisors is an integer number (2491661952).

Almost surely, 219100018317 is an apocalyptic number.

It is an amenable number.

19100018317 is a deficient number, since it is larger than the sum of its proper divisors (833277299).

19100018317 is a wasteful number, since it uses less digits than its factorization.

19100018317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118427.

The product of its (nonzero) digits is 1512, while the sum is 31.

The spelling of 19100018317 in words is "nineteen billion, one hundred million, eighteen thousand, three hundred seventeen".

Divisors: 1 23 7487 110917 172201 2551091 830435579 19100018317