Base | Representation |
---|---|
bin | 10010101000111000… |
… | …000100111110011110 |
3 | 1220122202020221120110 |
4 | 102220320010332132 |
5 | 311441331020133 |
6 | 13105515030450 |
7 | 1305641620350 |
oct | 225070047636 |
9 | 56582227513 |
10 | 20013141918 |
11 | 853a995810 |
12 | 3a6643b426 |
13 | 1b6c329613 |
14 | d7bd470d0 |
15 | 7c1eb4c63 |
hex | 4a8e04f9e |
20013141918 has 64 divisors (see below), whose sum is σ = 51623723520. Its totient is φ = 5018966400.
The previous prime is 20013141877. The next prime is 20013141923. The reversal of 20013141918 is 81914131002.
It is a congruent number.
It is an unprimeable number.
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, 733473 + ... + 760268.
It is an arithmetic number, because the mean of its divisors is an integer number (806620680).
Almost surely, 220013141918 is an apocalyptic number.
20013141918 is an abundant number, since it is smaller than the sum of its proper divisors (31610581602).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20013141918 is a wasteful number, since it uses less digits than its factorization.
20013141918 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1493793.
The product of its (nonzero) digits is 1728, while the sum is 30.
The spelling of 20013141918 in words is "twenty billion, thirteen million, one hundred forty-one thousand, nine hundred eighteen".
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