Base | Representation |
---|---|
bin | 1000100000011110010000… |
… | …01000011101011010111101 |
3 | 2110020110110112001210002012 |
4 | 10100033020020131122331 |
5 | 4423002330200004231 |
6 | 103442150433141005 |
7 | 3640414125152216 |
oct | 420171010353275 |
9 | 73213415053065 |
10 | 18707940234941 |
11 | 5a62aa1602991 |
12 | 21218833ba765 |
13 | a591c7235689 |
14 | 48967d46040d |
15 | 2269830a2e2b |
hex | 1103c821d6bd |
18707940234941 has 4 divisors (see below), whose sum is σ = 19521328940832. Its totient is φ = 17894551529052.
The previous prime is 18707940234859. The next prime is 18707940234979. The reversal of 18707940234941 is 14943204970781.
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.
It is not a de Polignac number, because 18707940234941 - 222 = 18707936040637 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18707940234241) 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, 406694352911 + ... + 406694352956.
It is an arithmetic number, because the mean of its divisors is an integer number (4880332235208).
Almost surely, 218707940234941 is an apocalyptic number.
It is an amenable number.
18707940234941 is a deficient number, since it is larger than the sum of its proper divisors (813388705891).
18707940234941 is an equidigital number, since it uses as much as digits as its factorization.
18707940234941 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 813388705890.
The product of its (nonzero) digits is 12192768, while the sum is 59.
The spelling of 18707940234941 in words is "eighteen trillion, seven hundred seven billion, nine hundred forty million, two hundred thirty-four thousand, nine hundred forty-one".
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