Base | Representation |
---|---|
bin | 1111100101010… |
… | …01110011101101 |
3 | 100002222012200212 |
4 | 13302221303231 |
5 | 231431001312 |
6 | 20545432205 |
7 | 3145043555 |
oct | 762516355 |
9 | 302865625 |
10 | 130718957 |
11 | 678730a6 |
12 | 3793b665 |
13 | 2110aac5 |
14 | 1350a165 |
15 | b721822 |
hex | 7ca9ced |
130718957 has 2 divisors, whose sum is σ = 130718958. Its totient is φ = 130718956.
The previous prime is 130718953. The next prime is 130718963. The reversal of 130718957 is 759817031.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 80748196 + 49970761 = 8986^2 + 7069^2 .
It is an emirp because it is prime and its reverse (759817031) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 130718957 - 22 = 130718953 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130718953) 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 as a sum of consecutive naturals, namely, 65359478 + 65359479.
It is an arithmetic number, because the mean of its divisors is an integer number (65359479).
Almost surely, 2130718957 is an apocalyptic number.
It is an amenable number.
130718957 is a deficient number, since it is larger than the sum of its proper divisors (1).
130718957 is an equidigital number, since it uses as much as digits as its factorization.
130718957 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 52920, while the sum is 41.
The square root of 130718957 is about 11433.2391298354. The cubic root of 130718957 is about 507.5118549003.
The spelling of 130718957 in words is "one hundred thirty million, seven hundred eighteen thousand, nine hundred fifty-seven".
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