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19219 is a prime number
BaseRepresentation
bin100101100010011
3222100211
410230103
51103334
6224551
7110014
oct45423
928324
1019219
1113492
12b157
138995
14700b
155a64
hex4b13

19219 has 2 divisors, whose sum is σ = 19220. Its totient is φ = 19218.

The previous prime is 19213. The next prime is 19231. The reversal of 19219 is 91291.

It is a weak prime.

It is an emirp because it is prime and its reverse (91291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19219 - 23 = 19211 is a prime.

It is a super-2 number, since 2×192192 = 738739922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19219.

It is not a weakly prime, because it can be changed into another prime (19211) 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 as a sum of consecutive naturals, namely, 9609 + 9610.

It is an arithmetic number, because the mean of its divisors is an integer number (9610).

219219 is an apocalyptic number.

19219 is a deficient number, since it is larger than the sum of its proper divisors (1).

19219 is an equidigital number, since it uses as much as digits as its factorization.

19219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 22.

The square root of 19219 is about 138.6326079968. The cubic root of 19219 is about 26.7861478872.

The spelling of 19219 in words is "nineteen thousand, two hundred nineteen".