19982213 has 2 divisors, whose sum is σ = 19982214. Its totient is φ = 19982212.

The previous prime is 19982177. The next prime is 19982251. The reversal of 19982213 is 31228991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14303524 + 5678689 = 3782^2 + 2383^2 .

It is a cyclic number.

It is not a de Polignac number, because 19982213 - 2¹⁰ = 19981189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19982273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991106 + 9991107.

It is an arithmetic number, because the mean of its divisors is an integer number (9991107).

Almost surely, 2^19982213 is an apocalyptic number.

It is an amenable number.

19982213 is a deficient number, since it is larger than the sum of its proper divisors (1).

19982213 is an equidigital number, since it uses as much as digits as its factorization.

19982213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 19982213 is about 4470.1468655963. The cubic root of 19982213 is about 271.3612688824.

The spelling of 19982213 in words is "nineteen million, nine hundred eighty-two thousand, two hundred thirteen".