Base | Representation |
---|---|
bin | 1100111100100101… |
… | …00110100011101001 |
3 | 122221101212022000020 |
4 | 12132102212203221 |
5 | 103213331101240 |
6 | 3105412231053 |
7 | 334146333030 |
oct | 63622464351 |
9 | 18841768006 |
10 | 6950643945 |
11 | 2a47503743 |
12 | 141b90b489 |
13 | 86a01498b |
14 | 49d18d717 |
15 | 2aa31a0d0 |
hex | 19e4a68e9 |
6950643945 has 32 divisors (see below), whose sum is σ = 12713165568. Its totient is φ = 3176583168.
The previous prime is 6950643943. The next prime is 6950643949. The reversal of 6950643945 is 5493460596.
It is not a de Polignac number, because 6950643945 - 21 = 6950643943 is a prime.
It is a super-2 number, since 2×69506439452 = 96622902500330326050, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (6950643943) 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 in 31 ways as a sum of consecutive naturals, for example, 549937 + ... + 562433.
It is an arithmetic number, because the mean of its divisors is an integer number (397286424).
Almost surely, 26950643945 is an apocalyptic number.
It is an amenable number.
6950643945 is a deficient number, since it is larger than the sum of its proper divisors (5762521623).
6950643945 is a wasteful number, since it uses less digits than its factorization.
6950643945 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 17809.
The product of its (nonzero) digits is 3499200, while the sum is 51.
The square root of 6950643945 is about 83370.5220386678. The cubic root of 6950643945 is about 1908.4246345890.
The spelling of 6950643945 in words is "six billion, nine hundred fifty million, six hundred forty-three thousand, nine hundred forty-five".
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