Base | Representation |
---|---|
bin | 1111100111011… |
… | …00100000100001 |
3 | 100010111002110112 |
4 | 13303230200201 |
5 | 232013222121 |
6 | 20555341105 |
7 | 3150262226 |
oct | 763544041 |
9 | 303432415 |
10 | 130992161 |
11 | 67a3a393 |
12 | 37a51795 |
13 | 211a5271 |
14 | 1357b94d |
15 | b77775b |
hex | 7cec821 |
130992161 has 4 divisors (see below), whose sum is σ = 131204400. Its totient is φ = 130779924.
The previous prime is 130992119. The next prime is 130992187. The reversal of 130992161 is 161299031.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 130992161 - 222 = 126797857 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130992661) 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 3 ways as a sum of consecutive naturals, for example, 105191 + ... + 106428.
It is an arithmetic number, because the mean of its divisors is an integer number (32801100).
Almost surely, 2130992161 is an apocalyptic number.
It is an amenable number.
130992161 is a deficient number, since it is larger than the sum of its proper divisors (212239).
130992161 is an equidigital number, since it uses as much as digits as its factorization.
130992161 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 212238.
The product of its (nonzero) digits is 2916, while the sum is 32.
The square root of 130992161 is about 11445.1806888314. The cubic root of 130992161 is about 507.8651772434.
The spelling of 130992161 in words is "one hundred thirty million, nine hundred ninety-two thousand, one hundred sixty-one".
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