Base | Representation |
---|---|
bin | 111011011101001… |
… | …1100000000101001 |
3 | 12011001000001110002 |
4 | 1312322130000221 |
5 | 13041211434234 |
6 | 525544232345 |
7 | 100303323440 |
oct | 16672340051 |
9 | 5131001402 |
10 | 1995030569 |
11 | 934162aa4 |
12 | 47816b6b5 |
13 | 25a42747c |
14 | 14cd63d57 |
15 | ba23027e |
hex | 76e9c029 |
1995030569 has 4 divisors (see below), whose sum is σ = 2280034944. Its totient is φ = 1710026196.
The previous prime is 1995030551. The next prime is 1995030577. The reversal of 1995030569 is 9650305991.
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, and also an emirpimes, since its reverse is a distinct semiprime: 9650305991 = 11287 ⋅854993.
It is a cyclic number.
It is not a de Polignac number, because 1995030569 - 216 = 1994965033 is a prime.
It is a super-2 number, since 2×19950305692 = 7960293942488927522, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1995030539) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142502177 + ... + 142502190.
It is an arithmetic number, because the mean of its divisors is an integer number (570008736).
Almost surely, 21995030569 is an apocalyptic number.
It is an amenable number.
1995030569 is a deficient number, since it is larger than the sum of its proper divisors (285004375).
1995030569 is an equidigital number, since it uses as much as digits as its factorization.
1995030569 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 285004374.
The product of its (nonzero) digits is 328050, while the sum is 47.
The square root of 1995030569 is about 44665.7650667712. The cubic root of 1995030569 is about 1258.8766693000.
The spelling of 1995030569 in words is "one billion, nine hundred ninety-five million, thirty thousand, five hundred sixty-nine".
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