16216819 has 2 divisors, whose sum is σ = 16216820. Its totient is φ = 16216818.

The previous prime is 16216807. The next prime is 16216831. The reversal of 16216819 is 91861261.

It is a balanced prime because it is at equal distance from previous prime (16216807) and next prime (16216831).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16216819 is a prime.

It is a super-2 number, since 2×16216819² = 525970436957522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16216019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8108409 + 8108410.

It is an arithmetic number, because the mean of its divisors is an integer number (8108410).

Almost surely, 2^16216819 is an apocalyptic number.

16216819 is a deficient number, since it is larger than the sum of its proper divisors (1).

16216819 is an equidigital number, since it uses as much as digits as its factorization.

16216819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 16216819 is about 4027.0111745561. The cubic root of 16216819 is about 253.1173353164.

The spelling of 16216819 in words is "sixteen million, two hundred sixteen thousand, eight hundred nineteen".