Base | Representation |
---|---|
bin | 10001111010110001… |
… | …010111101111101000 |
3 | 1211122211202120020100 |
4 | 101322301113233220 |
5 | 303400321204343 |
6 | 12501044025400 |
7 | 1250530113063 |
oct | 217261275750 |
9 | 54584676210 |
10 | 19239631848 |
11 | 81832a8198 |
12 | 388b392260 |
13 | 1a77cbcb58 |
14 | d073158da |
15 | 7791219d3 |
hex | 47ac57be8 |
19239631848 has 96 divisors (see below), whose sum is σ = 52522928640. Its totient is φ = 6362271360.
The previous prime is 19239631847. The next prime is 19239631891. The reversal of 19239631848 is 84813693291.
It is a Cunningham number, because it is equal to 1387072-1.
It is a nude number because it is divisible by every one of its digits.
It is a junction number, because it is equal to n+sod(n) for n = 19239631794 and 19239631803.
It is not an unprimeable number, because it can be changed into a prime (19239631847) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4991490 + ... + 4995342.
It is an arithmetic number, because the mean of its divisors is an integer number (547113840).
Almost surely, 219239631848 is an apocalyptic number.
19239631848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
19239631848 is an abundant number, since it is smaller than the sum of its proper divisors (33283296792).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19239631848 is a wasteful number, since it uses less digits than its factorization.
19239631848 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4399 (or 4392 counting only the distinct ones).
The product of its digits is 2239488, while the sum is 54.
The spelling of 19239631848 in words is "nineteen billion, two hundred thirty-nine million, six hundred thirty-one thousand, eight hundred forty-eight".
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