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18885037000 = 2353179105503
BaseRepresentation
bin10001100101101000…
…101100101111001000
31210202010112021112211
4101211220230233020
5302134032141000
612401535514504
71235663110624
oct214550545710
953663467484
1018885037000
1180111248a5
1237b0688a34
131a1c6b840b
14cb21b0184
15757e2b7ba
hex465a2cbc8

18885037000 has 64 divisors (see below), whose sum is σ = 44438284800. Its totient is φ = 7511742400.

The previous prime is 18885036977. The next prime is 18885037021. The reversal of 18885037000 is 73058881.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126249 + ... + 231751.

It is an arithmetic number, because the mean of its divisors is an integer number (694348200).

Almost surely, 218885037000 is an apocalyptic number.

18885037000 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 18885037000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22219142400).

18885037000 is an abundant number, since it is smaller than the sum of its proper divisors (25553247800).

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

18885037000 is a wasteful number, since it uses less digits than its factorization.

18885037000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105703 (or 105689 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 18885037000 in words is "eighteen billion, eight hundred eighty-five million, thirty-seven thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 179 200 250 358 500 716 895 1000 1432 1790 3580 4475 7160 8950 17900 22375 35800 44750 89500 105503 179000 211006 422012 527515 844024 1055030 2110060 2637575 4220120 5275150 10550300 13187875 18885037 21100600 26375750 37770074 52751500 75540148 94425185 105503000 151080296 188850370 377700740 472125925 755401480 944251850 1888503700 2360629625 3777007400 4721259250 9442518500 18885037000