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18298834848 = 253373781773
BaseRepresentation
bin10001000010101100…
…100000111110100000
31202020021111010101000
4101002230200332200
5244434000203343
612223435312000
71215314346510
oct210254407640
952207433330
1018298834848
117840240508
1236682ab600
131958110c38
14c583b9840
15721736ed3
hex442b20fa0

18298834848 has 192 divisors, whose sum is σ = 62645425920. Its totient is φ = 5086872576.

The previous prime is 18298834831. The next prime is 18298834919. The reversal of 18298834848 is 84843889281.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182890 + ... + 264662.

It is an arithmetic number, because the mean of its divisors is an integer number (326278260).

Almost surely, 218298834848 is an apocalyptic number.

18298834848 is a gapful number since it is divisible by the number (18) 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 18298834848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31322712960).

18298834848 is an abundant number, since it is smaller than the sum of its proper divisors (44346591072).

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

18298834848 is a wasteful number, since it uses less digits than its factorization.

18298834848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81836 (or 81822 counting only the distinct ones).

The product of its digits is 28311552, while the sum is 63.

The spelling of 18298834848 in words is "eighteen billion, two hundred ninety-eight million, eight hundred thirty-four thousand, eight hundred forty-eight".