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18289758830 = 257261282269
BaseRepresentation
bin10001000010001001…
…111001001001101110
31202012122102000102012
4101002021321021232
5244424134240310
612222513001222
71215144246020
oct210211711156
952178360365
1018289758830
117836101572
123665253212
131956283b05
14c570d6010
15720a42c05
hex44227926e

18289758830 has 16 divisors (see below), whose sum is σ = 37624646880. Its totient is φ = 6270774432.

The previous prime is 18289758829. The next prime is 18289758863. The reversal of 18289758830 is 3885798281.

It is a self number, because there is not a number n which added to its sum of digits gives 18289758830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130641065 + ... + 130641204.

It is an arithmetic number, because the mean of its divisors is an integer number (2351540430).

Almost surely, 218289758830 is an apocalyptic number.

18289758830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18289758830 is an abundant number, since it is smaller than the sum of its proper divisors (19334888050).

18289758830 is a wasteful number, since it uses less digits than its factorization.

18289758830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261282283.

The product of its (nonzero) digits is 7741440, while the sum is 59.

The spelling of 18289758830 in words is "eighteen billion, two hundred eighty-nine million, seven hundred fifty-eight thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 261282269 522564538 1306411345 1828975883 2612822690 3657951766 9144879415 18289758830