19983361 has 2 divisors, whose sum is σ = 19983362. Its totient is φ = 19983360.

The previous prime is 19983289. The next prime is 19983371. The reversal of 19983361 is 16338991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18870336 + 1113025 = 4344^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 19983361 - 2²³ = 11594753 is a prime.

It is not a weakly prime, because it can be changed into another prime (19983371) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991680 + 9991681.

It is an arithmetic number, because the mean of its divisors is an integer number (9991681).

Almost surely, 2^19983361 is an apocalyptic number.

It is an amenable number.

19983361 is a deficient number, since it is larger than the sum of its proper divisors (1).

19983361 is an equidigital number, since it uses as much as digits as its factorization.

19983361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 40.

The square root of 19983361 is about 4470.2752711662. The cubic root of 19983361 is about 271.3664654502.

The spelling of 19983361 in words is "nineteen million, nine hundred eighty-three thousand, three hundred sixty-one".