| Base | Representation |
|---|---|
| bin | 111010011101011… |
| … | …1111010001010000 |
| 3 | 12001201010122112100 |
| 4 | 1310322333101100 |
| 5 | 13004133324220 |
| 6 | 522352200400 |
| 7 | 66416333244 |
| oct | 16472772120 |
| 9 | 5051118470 |
| 10 | 1961620560 |
| 11 | 917313619 |
| 12 | 468b39100 |
| 13 | 25352a333 |
| 14 | 148748424 |
| 15 | b7330d90 |
| hex | 74ebf450 |
1961620560 has 120 divisors (see below), whose sum is σ = 6671358720. Its totient is φ = 516462336.
The previous prime is 1961620547. The next prime is 1961620567. The reversal of 1961620560 is 650261691.
1961620560 is a `hidden beast` number, since 1 + 96 + 1 + 6 + 2 + 0 + 560 = 666.
It is a tau number, because it is divible by the number of its divisors (120).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1961620567) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39637 + ... + 74123.
It is an arithmetic number, because the mean of its divisors is an integer number (55594656).
Almost surely, 21961620560 is an apocalyptic number.
1961620560 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 1961620560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3335679360).
1961620560 is an abundant number, since it is smaller than the sum of its proper divisors (4709738160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1961620560 is a wasteful number, since it uses less digits than its factorization.
1961620560 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 34585 (or 34576 counting only the distinct ones).
The product of its (nonzero) digits is 19440, while the sum is 36.
The square root of 1961620560 is about 44290.1858203372. The cubic root of 1961620560 is about 1251.8097646703.
It can be divided in two parts, 1961 and 620560, that added together give a square (622521 = 7892).
The spelling of 1961620560 in words is "one billion, nine hundred sixty-one million, six hundred twenty thousand, five hundred sixty".
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