Base | Representation |
---|---|
bin | 10001001010001110… |
… | …001100101001001011 |
3 | 1202120002002022102020 |
4 | 101022032030221023 |
5 | 300213311324341 |
6 | 12244145535523 |
7 | 1221406544130 |
oct | 211216145113 |
9 | 52502068366 |
10 | 18425104971 |
11 | 78a5545089 |
12 | 36a26445a3 |
13 | 1978321aa0 |
14 | c6b088587 |
15 | 72c87a566 |
hex | 44a38ca4b |
18425104971 has 32 divisors (see below), whose sum is σ = 30253267968. Its totient is φ = 9713208960.
The previous prime is 18425104967. The next prime is 18425104987. The reversal of 18425104971 is 17940152481.
It is not a de Polignac number, because 18425104971 - 22 = 18425104967 is a prime.
It is not an unprimeable number, because it can be changed into a prime (18425104921) 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, 485961 + ... + 522501.
It is an arithmetic number, because the mean of its divisors is an integer number (945414624).
Almost surely, 218425104971 is an apocalyptic number.
18425104971 is a deficient number, since it is larger than the sum of its proper divisors (11828162997).
18425104971 is a wasteful number, since it uses less digits than its factorization.
18425104971 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 38411.
The product of its (nonzero) digits is 80640, while the sum is 42.
It can be divided in two parts, 1842510 and 4971, that added together give a palindrome (1847481).
The spelling of 18425104971 in words is "eighteen billion, four hundred twenty-five million, one hundred four thousand, nine hundred seventy-one".
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