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18872096418 = 233749926181
BaseRepresentation
bin10001100100110111…
…010101011010100010
31210201020011211102000
4101210313111122202
5302122224041133
612400354304430
71235445113160
oct214467253242
953636154360
1018872096418
1180048963aa
1237a8288116
131a19b07276
14cb05a2230
15756c22413
hex464dd56a2

18872096418 has 32 divisors (see below), whose sum is σ = 47929134720. Its totient is φ = 5392027440.

The previous prime is 18872096417. The next prime is 18872096429. The reversal of 18872096418 is 81469027881.

18872096418 is a `hidden beast` number, since 18 + 8 + 7 + 209 + 6 + 418 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (18872096417) 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 15 ways as a sum of consecutive naturals, for example, 24962713 + ... + 24963468.

It is an arithmetic number, because the mean of its divisors is an integer number (1497785460).

Almost surely, 218872096418 is an apocalyptic number.

18872096418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18872096418 is an abundant number, since it is smaller than the sum of its proper divisors (29057038302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18872096418 is a wasteful number, since it uses less digits than its factorization.

18872096418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49926199 (or 49926193 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 18872096418 in words is "eighteen billion, eight hundred seventy-two million, ninety-six thousand, four hundred eighteen".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 126 189 378 49926181 99852362 149778543 299557086 349483267 449335629 698966534 898671258 1048449801 1348006887 2096899602 2696013774 3145349403 6290698806 9436048209 18872096418