Base | Representation |
---|---|
bin | 111011010101010… |
… | …0000000011110000 |
3 | 12010202010210200200 |
4 | 1312222200003300 |
5 | 13034124242343 |
6 | 525314515200 |
7 | 100222653465 |
oct | 16652400360 |
9 | 5122123620 |
10 | 1990852848 |
11 | 93186a236 |
12 | 476895b00 |
13 | 2595c3a4a |
14 | 14c59766c |
15 | b9ba74d3 |
hex | 76aa00f0 |
1990852848 has 30 divisors (see below), whose sum is σ = 5571623304. Its totient is φ = 663617568.
The previous prime is 1990852817. The next prime is 1990852849. The reversal of 1990852848 is 8482580991.
It is a super-2 number, since 2×19908528482 = 7926990124779422208, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1990852794 and 1990852803.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1990852849) by changing a digit.
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 5 ways as a sum of consecutive naturals, for example, 6912540 + ... + 6912827.
Almost surely, 21990852848 is an apocalyptic number.
1990852848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
1990852848 is an abundant number, since it is smaller than the sum of its proper divisors (3580770456).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1990852848 is a wasteful number, since it uses less digits than its factorization.
1990852848 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13825381 (or 13825372 counting only the distinct ones).
The product of its (nonzero) digits is 1658880, while the sum is 54.
The square root of 1990852848 is about 44618.9740805411. The cubic root of 1990852848 is about 1257.9973325930.
The spelling of 1990852848 in words is "one billion, nine hundred ninety million, eight hundred fifty-two thousand, eight hundred forty-eight".
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