Base | Representation |
---|---|
bin | 10001101001100011… |
… | …101010100100000100 |
3 | 1210220201022201102111 |
4 | 101221203222210010 |
5 | 302302402414434 |
6 | 12412245550404 |
7 | 1240422236200 |
oct | 215143524404 |
9 | 53821281374 |
10 | 18950826244 |
11 | 804527a279 |
12 | 380a715404 |
13 | 1a3021146c |
14 | cbac17b00 |
15 | 75dac4964 |
hex | 4698ea904 |
18950826244 has 27 divisors (see below), whose sum is σ = 38582391477. Its totient is φ = 8120956704.
The previous prime is 18950826229. The next prime is 18950826247. The reversal of 18950826244 is 44262805981.
The square root of 18950826244 is 137662.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 9866448900 + 9084377344 = 99330^2 + 95312^2 .
It is a Harshad number since it is a multiple of its sum of digits (49).
It is not an unprimeable number, because it can be changed into a prime (18950826247) by changing a digit.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1922352 + ... + 1932184.
Almost surely, 218950826244 is an apocalyptic number.
18950826244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.
18950826244 is the 137662-nd square number.
It is an amenable number.
18950826244 is an abundant number, since it is smaller than the sum of its proper divisors (19631565233).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18950826244 is an frugal number, since it uses more digits than its factorization.
18950826244 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19684 (or 9842 counting only the distinct ones).
The product of its (nonzero) digits is 1105920, while the sum is 49.
Multiplying 18950826244 by its sum of digits (49), we get a square (928590485956 = 9636342).
18950826244 divided by its sum of digits (49) gives a square (386751556 = 196662).
The spelling of 18950826244 in words is "eighteen billion, nine hundred fifty million, eight hundred twenty-six thousand, two hundred forty-four".
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