Base | Representation |
---|---|
bin | 100000001110000… |
… | …0111100001011101 |
3 | 2210100022012202222 |
4 | 1000130013201131 |
5 | 4203231101134 |
6 | 255135555125 |
7 | 35535206660 |
oct | 10034074135 |
9 | 2710265688 |
10 | 1081112669 |
11 | 505294a4a |
12 | 26208baa5 |
13 | 142c99b50 |
14 | a38236d7 |
15 | 64da4a2e |
hex | 4070785d |
1081112669 has 16 divisors (see below), whose sum is σ = 1349349120. Its totient is φ = 843333120.
The previous prime is 1081112639. The next prime is 1081112689. The reversal of 1081112669 is 9662111801.
It is not a de Polignac number, because 1081112669 - 28 = 1081112413 is a prime.
It is a super-2 number, since 2×10811126692 = 2337609206144607122, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1081112609) 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 15 ways as a sum of consecutive naturals, for example, 77204 + ... + 90125.
It is an arithmetic number, because the mean of its divisors is an integer number (84334320).
Almost surely, 21081112669 is an apocalyptic number.
It is an amenable number.
1081112669 is a deficient number, since it is larger than the sum of its proper divisors (268236451).
1081112669 is a wasteful number, since it uses less digits than its factorization.
1081112669 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 167420.
The product of its (nonzero) digits is 5184, while the sum is 35.
The square root of 1081112669 is about 32880.2778120867. The cubic root of 1081112669 is about 1026.3377873030.
The spelling of 1081112669 in words is "one billion, eighty-one million, one hundred twelve thousand, six hundred sixty-nine".
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