Base | Representation |
---|---|
bin | 10000111001101111… |
… | …110100110101100000 |
3 | 1201211210222212121112 |
4 | 100321233310311200 |
5 | 244132032121210 |
6 | 12200513442452 |
7 | 1211512320125 |
oct | 207157646540 |
9 | 51753885545 |
10 | 18148707680 |
11 | 7773521774 |
12 | 3625b70428 |
13 | 1932c991ac |
14 | c4249a74c |
15 | 71347ed05 |
hex | 439bf4d60 |
18148707680 has 48 divisors (see below), whose sum is σ = 45398465280. Its totient is φ = 6832453632.
The previous prime is 18148707677. The next prime is 18148707701. The reversal of 18148707680 is 8670784181.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3333440 + ... + 3338879.
It is an arithmetic number, because the mean of its divisors is an integer number (945801360).
Almost surely, 218148707680 is an apocalyptic number.
18148707680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
18148707680 is an abundant number, since it is smaller than the sum of its proper divisors (27249757600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18148707680 is a wasteful number, since it uses less digits than its factorization.
18148707680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6672351 (or 6672343 counting only the distinct ones).
The product of its (nonzero) digits is 602112, while the sum is 50.
The spelling of 18148707680 in words is "eighteen billion, one hundred forty-eight million, seven hundred seven thousand, six hundred eighty".
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