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18343283730 = 23517231139491
BaseRepresentation
bin10001000101010110…
…000100110000010010
31202100101010100202220
4101011112010300102
5300031340034410
612232104121510
71216364224212
oct210526046022
952311110686
1018343283730
11786333a622
12367b166296
1319643a4755
14c6026a242
157255b7070
hex445584c12

18343283730 has 192 divisors, whose sum is σ = 48720752640. Its totient is φ = 4414233600.

The previous prime is 18343283711. The next prime is 18343283737. The reversal of 18343283730 is 3738234381.

It is not an unprimeable number, because it can be changed into a prime (18343283737) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37358785 + ... + 37359275.

It is an arithmetic number, because the mean of its divisors is an integer number (253753920).

Almost surely, 218343283730 is an apocalyptic number.

18343283730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18343283730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24360376320).

18343283730 is an abundant number, since it is smaller than the sum of its proper divisors (30377468910).

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

18343283730 is a wasteful number, since it uses less digits than its factorization.

18343283730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 18343283730 in words is "eighteen billion, three hundred forty-three million, two hundred eighty-three thousand, seven hundred thirty".