Base | Representation |
---|---|
bin | 10001101110110000… |
… | …001101100001100000 |
3 | 1211010210100200001100 |
4 | 101232300031201200 |
5 | 302442212014443 |
6 | 12425042234400 |
7 | 1242531224550 |
oct | 215660154140 |
9 | 54123320040 |
10 | 19038001248 |
11 | 808a501132 |
12 | 3833955a00 |
13 | 1a452b45c6 |
14 | cc862b160 |
15 | 7665943d3 |
hex | 46ec0d860 |
19038001248 has 72 divisors (see below), whose sum is σ = 61873510608. Its totient is φ = 5439428352.
The previous prime is 19038001223. The next prime is 19038001249. The reversal of 19038001248 is 84210083091.
It is a tau number, because it is divible by the number of its divisors (72).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (19038001249) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4719711 + ... + 4723742.
It is an arithmetic number, because the mean of its divisors is an integer number (859354314).
Almost surely, 219038001248 is an apocalyptic number.
19038001248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
19038001248 is an abundant number, since it is smaller than the sum of its proper divisors (42835509360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19038001248 is a wasteful number, since it uses less digits than its factorization.
19038001248 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9443476 (or 9443465 counting only the distinct ones).
The product of its (nonzero) digits is 13824, while the sum is 36.
The spelling of 19038001248 in words is "nineteen billion, thirty-eight million, one thousand, two hundred forty-eight".
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