Base | Representation |
---|---|
bin | 10001000011010111… |
… | …111010110110001001 |
3 | 1202021001220012021002 |
4 | 101003113322312021 |
5 | 244444403304001 |
6 | 12224523224345 |
7 | 1215513146123 |
oct | 210327726611 |
9 | 52231805232 |
10 | 18310213001 |
11 | 7846702043 |
12 | 36700780b5 |
13 | 195a595b82 |
14 | c59adc213 |
15 | 72273346b |
hex | 4435fad89 |
18310213001 has 32 divisors (see below), whose sum is σ = 20707239168. Its totient is φ = 16110581760.
The previous prime is 18310212983. The next prime is 18310213003. The reversal of 18310213001 is 10031201381.
It is not a de Polignac number, because 18310213001 - 214 = 18310196617 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (18310213003) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1582700 + ... + 1594226.
It is an arithmetic number, because the mean of its divisors is an integer number (647101224).
Almost surely, 218310213001 is an apocalyptic number.
It is an amenable number.
18310213001 is a deficient number, since it is larger than the sum of its proper divisors (2397026167).
18310213001 is a wasteful number, since it uses less digits than its factorization.
18310213001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11681.
The product of its (nonzero) digits is 144, while the sum is 20.
Adding to 18310213001 its reverse (10031201381), we get a palindrome (28341414382).
The spelling of 18310213001 in words is "eighteen billion, three hundred ten million, two hundred thirteen thousand, one".
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