Base | Representation |
---|---|
bin | 10000110001101010… |
… | …101011111010000010 |
3 | 1201111100220110100210 |
4 | 100301222223322002 |
5 | 243342331031113 |
6 | 12135232054550 |
7 | 1205245120620 |
oct | 206152537202 |
9 | 51440813323 |
10 | 18013142658 |
11 | 7703a49765 |
12 | 35a8694456 |
13 | 1910b826c4 |
14 | c2c48c510 |
15 | 7066026c3 |
hex | 431aabe82 |
18013142658 has 32 divisors (see below), whose sum is σ = 42501058560. Its totient is φ = 4980592080.
The previous prime is 18013142639. The next prime is 18013142669. The reversal of 18013142658 is 85624131081.
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, 6916188 + ... + 6918791.
It is an arithmetic number, because the mean of its divisors is an integer number (1328158080).
Almost surely, 218013142658 is an apocalyptic number.
18013142658 is an abundant number, since it is smaller than the sum of its proper divisors (24487915902).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18013142658 is a wasteful number, since it uses less digits than its factorization.
18013142658 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13835022.
The product of its (nonzero) digits is 46080, while the sum is 39.
The spelling of 18013142658 in words is "eighteen billion, thirteen million, one hundred forty-two thousand, six hundred fifty-eight".
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