Base | Representation |
---|---|
bin | 111111111010000… |
… | …101111010001001 |
3 | 2202201112001111211 |
4 | 333322011322021 |
5 | 4143440140121 |
6 | 254220453121 |
7 | 35366330404 |
oct | 7772057211 |
9 | 2681461454 |
10 | 1072193161 |
11 | 500252656 |
12 | 25b0aa1a1 |
13 | 141196030 |
14 | a2580d3b |
15 | 641e1ce1 |
hex | 3fe85e89 |
1072193161 has 24 divisors (see below), whose sum is σ = 1235129280. Its totient is φ = 922676832.
The previous prime is 1072193159. The next prime is 1072193189. The reversal of 1072193161 is 1613912701.
It is not a de Polignac number, because 1072193161 - 21 = 1072193159 is a prime.
It is a super-2 number, since 2×10721931612 = 2299196348990343842, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1072193761) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1108300 + ... + 1109266.
It is an arithmetic number, because the mean of its divisors is an integer number (51463720).
Almost surely, 21072193161 is an apocalyptic number.
It is an amenable number.
1072193161 is a deficient number, since it is larger than the sum of its proper divisors (162936119).
1072193161 is an equidigital number, since it uses as much as digits as its factorization.
1072193161 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1133 (or 1066 counting only the distinct ones).
The product of its (nonzero) digits is 2268, while the sum is 31.
The square root of 1072193161 is about 32744.3607511278. The cubic root of 1072193161 is about 1023.5074564154.
The spelling of 1072193161 in words is "one billion, seventy-two million, one hundred ninety-three thousand, one hundred sixty-one".
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