Base | Representation |
---|---|
bin | 10000110111001110… |
… | …101111100111000000 |
3 | 1201201212112112121200 |
4 | 100313032233213000 |
5 | 244040224343323 |
6 | 12152404421200 |
7 | 1210460356413 |
oct | 206716574700 |
9 | 51655475550 |
10 | 18106481088 |
11 | 7751700263 |
12 | 36139a7800 |
13 | 1927303047 |
14 | c3aa27b7a |
15 | 70e8dd443 |
hex | 4373af9c0 |
18106481088 has 84 divisors (see below), whose sum is σ = 51924280200. Its totient is φ = 6032549376.
The previous prime is 18106481083. The next prime is 18106481101. The reversal of 18106481088 is 88018460181.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18106481083) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1397263 + ... + 1410161.
Almost surely, 218106481088 is an apocalyptic number.
18106481088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
18106481088 is an abundant number, since it is smaller than the sum of its proper divisors (33817799112).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18106481088 is a wasteful number, since it uses less digits than its factorization.
18106481088 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15354 (or 15341 counting only the distinct ones).
The product of its (nonzero) digits is 98304, while the sum is 45.
The spelling of 18106481088 in words is "eighteen billion, one hundred six million, four hundred eighty-one thousand, eighty-eight".
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