19143329 has 2 divisors, whose sum is σ = 19143330. Its totient is φ = 19143328.

The previous prime is 19143287. The next prime is 19143331. The reversal of 19143329 is 92334191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19140625 + 2704 = 4375^2 + 52^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19143329 is a prime.

It is a Sophie Germain prime.

Together with 19143331, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19143295 and 19143304.

It is not a weakly prime, because it can be changed into another prime (19143349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9571664 + 9571665.

It is an arithmetic number, because the mean of its divisors is an integer number (9571665).

Almost surely, 2^19143329 is an apocalyptic number.

It is an amenable number.

19143329 is a deficient number, since it is larger than the sum of its proper divisors (1).

19143329 is an equidigital number, since it uses as much as digits as its factorization.

19143329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 19143329 is about 4375.3090176581. The cubic root of 19143329 is about 267.5094659940.

The spelling of 19143329 in words is "nineteen million, one hundred forty-three thousand, three hundred twenty-nine".