19680329 has 2 divisors, whose sum is σ = 19680330. Its totient is φ = 19680328.

The previous prime is 19680293. The next prime is 19680343. The reversal of 19680329 is 92308691.

Together with previous prime (19680293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15366400 + 4313929 = 3920^2 + 2077^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19680329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19680292 and 19680301.

It is not a weakly prime, because it can be changed into another prime (19680359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9840164 + 9840165.

It is an arithmetic number, because the mean of its divisors is an integer number (9840165).

Almost surely, 2^19680329 is an apocalyptic number.

It is an amenable number.

19680329 is a deficient number, since it is larger than the sum of its proper divisors (1).

19680329 is an equidigital number, since it uses as much as digits as its factorization.

19680329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 19680329 is about 4436.2516835725. The cubic root of 19680329 is about 269.9877863702.

The spelling of 19680329 in words is "nineteen million, six hundred eighty thousand, three hundred twenty-nine".