Base | Representation |
---|---|
bin | 10001001100001011… |
… | …111011010110001110 |
3 | 1202122101002211002000 |
4 | 101030023323112032 |
5 | 300300231024040 |
6 | 12251324213130 |
7 | 1222256646312 |
oct | 211413732616 |
9 | 52571084060 |
10 | 18458064270 |
11 | 7912106978 |
12 | 36b169a1a6 |
13 | 19820c1a29 |
14 | c715c7b42 |
15 | 7306db130 |
hex | 44c2fb58e |
18458064270 has 32 divisors (see below), whose sum is σ = 49221505440. Its totient is φ = 4922150400.
The previous prime is 18458064269. The next prime is 18458064281. The reversal of 18458064270 is 7246085481.
18458064270 is a `hidden beast` number, since 1 + 8 + 4 + 580 + 64 + 2 + 7 + 0 = 666.
It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
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, 34181331 + ... + 34181870.
It is an arithmetic number, because the mean of its divisors is an integer number (1538172045).
Almost surely, 218458064270 is an apocalyptic number.
18458064270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
18458064270 is an abundant number, since it is smaller than the sum of its proper divisors (30763441170).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18458064270 is a wasteful number, since it uses less digits than its factorization.
18458064270 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 68363217 (or 68363211 counting only the distinct ones).
The product of its (nonzero) digits is 430080, while the sum is 45.
The spelling of 18458064270 in words is "eighteen billion, four hundred fifty-eight million, sixty-four thousand, two hundred seventy".
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