Base | Representation |
---|---|
bin | 1111100100100… |
… | …01010111111111 |
3 | 100002210010102021 |
4 | 13302101113333 |
5 | 231414301004 |
6 | 20543341011 |
7 | 3144146026 |
oct | 762212777 |
9 | 302703367 |
10 | 130618879 |
11 | 67804996 |
12 | 378b1767 |
13 | 210a43a1 |
14 | 134c18bd |
15 | b701d54 |
hex | 7c915ff |
130618879 has 2 divisors, whose sum is σ = 130618880. Its totient is φ = 130618878.
The previous prime is 130618823. The next prime is 130618897. The reversal of 130618879 is 978816031.
Together with next prime (130618897) it forms an Ormiston pair, because they use the same digits, order apart.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 130618879 - 217 = 130487807 is a prime.
It is a super-2 number, since 2×1306188792 = 34122583102433282, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130688879) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65309439 + 65309440.
It is an arithmetic number, because the mean of its divisors is an integer number (65309440).
Almost surely, 2130618879 is an apocalyptic number.
130618879 is a deficient number, since it is larger than the sum of its proper divisors (1).
130618879 is an equidigital number, since it uses as much as digits as its factorization.
130618879 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 72576, while the sum is 43.
The square root of 130618879 is about 11428.8616668503. The cubic root of 130618879 is about 507.3823053694.
The spelling of 130618879 in words is "one hundred thirty million, six hundred eighteen thousand, eight hundred seventy-nine".
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