| Base | Representation |
|---|---|
| bin | 11111110001110100110… |
| … | …11100000100100000100 |
| 3 | 10212101101112012212202110 |
| 4 | 33320322123200210010 |
| 5 | 120342203401423410 |
| 6 | 2153340212541020 |
| 7 | 141613230501324 |
| oct | 17707233404404 |
| 9 | 3771345185673 |
| 10 | 1091901982980 |
| 11 | 391089226a46 |
| 12 | 15774b921770 |
| 13 | 7bc73167123 |
| 14 | 3abc3ba7284 |
| 15 | 1d609a93720 |
| hex | fe3a6e0904 |
1091901982980 has 192 divisors, whose sum is σ = 3359391436800. Its totient is φ = 263758809600.
The previous prime is 1091901982949. The next prime is 1091901982981. The reversal of 1091901982980 is 892891091901.
It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (57).
It is a self number, because there is not a number n which added to its sum of digits gives 1091901982980.
It is not an unprimeable number, because it can be changed into a prime (1091901982981) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 93311130 + ... + 93322830.
It is an arithmetic number, because the mean of its divisors is an integer number (17496830400).
Almost surely, 21091901982980 is an apocalyptic number.
1091901982980 is a gapful number since it is divisible by the number (10) 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 1091901982980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1679695718400).
1091901982980 is an abundant number, since it is smaller than the sum of its proper divisors (2267489453820).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1091901982980 is a wasteful number, since it uses less digits than its factorization.
1091901982980 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15314 (or 15312 counting only the distinct ones).
The product of its (nonzero) digits is 839808, while the sum is 57.
The spelling of 1091901982980 in words is "one trillion, ninety-one billion, nine hundred one million, nine hundred eighty-two thousand, nine hundred eighty".
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