16216349 has 2 divisors, whose sum is σ = 16216350. Its totient is φ = 16216348.

The previous prime is 16216339. The next prime is 16216393. The reversal of 16216349 is 94361261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15155449 + 1060900 = 3893^2 + 1030^2 .

It is an emirp because it is prime and its reverse (94361261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16216349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16216339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8108174 + 8108175.

It is an arithmetic number, because the mean of its divisors is an integer number (8108175).

Almost surely, 2^16216349 is an apocalyptic number.

It is an amenable number.

16216349 is a deficient number, since it is larger than the sum of its proper divisors (1).

16216349 is an equidigital number, since it uses as much as digits as its factorization.

16216349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 16216349 is about 4026.9528181989. The cubic root of 16216349 is about 253.1148899889.

The spelling of 16216349 in words is "sixteen million, two hundred sixteen thousand, three hundred forty-nine".