| Base | Representation |
|---|---|
| bin | 111010011101110… |
| … | …1111101010000000 |
| 3 | 12001201111201101210 |
| 4 | 1310323233222000 |
| 5 | 13004211200002 |
| 6 | 522400330120 |
| 7 | 66421120125 |
| oct | 16473575200 |
| 9 | 5051451353 |
| 10 | 1961818752 |
| 11 | 917439513 |
| 12 | 469013940 |
| 13 | 2535995ca |
| 14 | 14879a74c |
| 15 | b736e96c |
| hex | 74eefa80 |
1961818752 has 128 divisors (see below), whose sum is σ = 5309516160. Its totient is φ = 641728512.
The previous prime is 1961818721. The next prime is 1961818757. The reversal of 1961818752 is 2578181691.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (128).
It is a Smith number, since the sum of its digits (48) 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 (48).
It is not an unprimeable number, because it can be changed into a prime (1961818757) 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 15 ways as a sum of consecutive naturals, for example, 7633408 + ... + 7633664.
It is an arithmetic number, because the mean of its divisors is an integer number (41480595).
Almost surely, 21961818752 is an apocalyptic number.
1961818752 is a gapful number since it is divisible by the number (12) 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 1961818752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2654758080).
1961818752 is an abundant number, since it is smaller than the sum of its proper divisors (3347697408).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1961818752 is a wasteful number, since it uses less digits than its factorization.
1961818752 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 570 (or 558 counting only the distinct ones).
The product of its digits is 241920, while the sum is 48.
The square root of 1961818752 is about 44292.4231895253. The cubic root of 1961818752 is about 1251.8519220462.
The spelling of 1961818752 in words is "one billion, nine hundred sixty-one million, eight hundred eighteen thousand, seven hundred fifty-two".
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