| Base | Representation |
|---|---|
| bin | 1000000010111100… |
| … | …0010111101100000 |
| 3 | 12120112002001022100 |
| 4 | 2000233002331200 |
| 5 | 13410403112134 |
| 6 | 554152210400 |
| 7 | 104344065144 |
| oct | 20057027540 |
| 9 | 5515061270 |
| 10 | 2159816544 |
| 11 | a09184156 |
| 12 | 503399a00 |
| 13 | 285602472 |
| 14 | 166bbb224 |
| 15 | c9930999 |
| hex | 80bc2f60 |
2159816544 has 144 divisors (see below), whose sum is σ = 6593447952. Its totient is φ = 668196864.
The previous prime is 2159816539. The next prime is 2159816563. The reversal of 2159816544 is 4456189512.
2159816544 is a `hidden beast` number, since 2 + 1 + 5 + 98 + 16 + 544 = 666.
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×21598165442 = 9329615007472207872, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 2159816544.
It is a congruent number.
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 23 ways as a sum of consecutive naturals, for example, 354387 + ... + 360429.
It is an arithmetic number, because the mean of its divisors is an integer number (45787833).
Almost surely, 22159816544 is an apocalyptic number.
2159816544 is a gapful number since it is divisible by the number (24) 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 2159816544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3296723976).
2159816544 is an abundant number, since it is smaller than the sum of its proper divisors (4433631408).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2159816544 is a wasteful number, since it uses less digits than its factorization.
2159816544 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6149 (or 6138 counting only the distinct ones).
The product of its digits is 345600, while the sum is 45.
The square root of 2159816544 is about 46473.8264402664. The cubic root of 2159816544 is about 1292.6242163191.
The spelling of 2159816544 in words is "two billion, one hundred fifty-nine million, eight hundred sixteen thousand, five hundred forty-four".
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