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BaseRepresentation
bin100101010010101
3222012011
410222111
51102333
6224221
7106444
oct45225
928164
1019093
1113388
12b071
1388c9
146d5b
1559cd
hex4a95

19093 has 4 divisors (see below), whose sum is σ = 19468. Its totient is φ = 18720.

The previous prime is 19087. The next prime is 19121. The reversal of 19093 is 39091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 324 + 18769 = 18^2 + 137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-19093 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96 + ... + 217.

It is an arithmetic number, because the mean of its divisors is an integer number (4867).

219093 is an apocalyptic number.

It is an amenable number.

19093 is a deficient number, since it is larger than the sum of its proper divisors (375).

19093 is an equidigital number, since it uses as much as digits as its factorization.

19093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 19093 is about 138.1774221789. The cubic root of 19093 is about 26.7274827251.

The spelling of 19093 in words is "nineteen thousand, ninety-three".

Divisors: 1 61 313 19093