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18874289160 = 233251914291931
BaseRepresentation
bin10001100100111111…
…101100110000001000
31210201101022020021200
4101210333230300020
5302123304223120
612400513304200
71235502545046
oct214477546010
953641266250
1018874289160
118006053891
1237a8b65060
131a1a3c434c
14cb09b3396
15757006e90
hex464fecc08

18874289160 has 192 divisors, whose sum is σ = 64648584000. Its totient is φ = 4762437120.

The previous prime is 18874289131. The next prime is 18874289171. The reversal of 18874289160 is 6198247881.

It is a junction number, because it is equal to n+sod(n) for n = 18874289097 and 18874289106.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9773395 + ... + 9775325.

It is an arithmetic number, because the mean of its divisors is an integer number (336711375).

Almost surely, 218874289160 is an apocalyptic number.

18874289160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18874289160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32324292000).

18874289160 is an abundant number, since it is smaller than the sum of its proper divisors (45774294840).

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

18874289160 is a wasteful number, since it uses less digits than its factorization.

18874289160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396 (or 3389 counting only the distinct ones).

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

The spelling of 18874289160 in words is "eighteen billion, eight hundred seventy-four million, two hundred eighty-nine thousand, one hundred sixty".