Base | Representation |
---|---|
bin | 111000111000001… |
… | …0001100000000001 |
3 | 11221000010211101111 |
4 | 1301300101200001 |
5 | 12402032330001 |
6 | 513213203321 |
7 | 65202545431 |
oct | 16160214001 |
9 | 4830124344 |
10 | 1908480001 |
11 | 89a3182aa |
12 | 453190541 |
13 | 24551260c |
14 | 1416742c1 |
15 | b2835851 |
hex | 71c11801 |
1908480001 has 4 divisors (see below), whose sum is σ = 1970043904. Its totient is φ = 1846916100.
The previous prime is 1908479999. The next prime is 1908480031. The reversal of 1908480001 is 1000848091.
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, and also an emirpimes, since its reverse is a distinct semiprime: 1000848091 = 43 ⋅23275537.
It is a cyclic number.
It is not a de Polignac number, because 1908480001 - 21 = 1908479999 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 61563871 = 1908480001 / (1 + 9 + 0 + 8 + 4 + 8 + 0 + 0 + 0 + 1).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1908480031) 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, 30781905 + ... + 30781966.
It is an arithmetic number, because the mean of its divisors is an integer number (492510976).
Almost surely, 21908480001 is an apocalyptic number.
It is an amenable number.
1908480001 is a deficient number, since it is larger than the sum of its proper divisors (61563903).
1908480001 is an equidigital number, since it uses as much as digits as its factorization.
1908480001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 61563902.
The product of its (nonzero) digits is 2304, while the sum is 31.
The square root of 1908480001 is about 43686.1534241686. The cubic root of 1908480001 is about 1240.4022283829.
The spelling of 1908480001 in words is "one billion, nine hundred eight million, four hundred eighty thousand, one".
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