16982281 has 2 divisors, whose sum is σ = 16982282. Its totient is φ = 16982280.

The previous prime is 16982243. The next prime is 16982299. The reversal of 16982281 is 18228961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11964681 + 5017600 = 3459^2 + 2240^2 .

It is a cyclic number.

It is not a de Polignac number, because 16982281 - 2⁷ = 16982153 is a prime.

It is a super-2 number, since 2×16982281² = 576795735925922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16982281.

It is not a weakly prime, because it can be changed into another prime (16982681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8491140 + 8491141.

It is an arithmetic number, because the mean of its divisors is an integer number (8491141).

Almost surely, 2^16982281 is an apocalyptic number.

It is an amenable number.

16982281 is a deficient number, since it is larger than the sum of its proper divisors (1).

16982281 is an equidigital number, since it uses as much as digits as its factorization.

16982281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 37.

The square root of 16982281 is about 4120.9563210498. The cubic root of 16982281 is about 257.0387936210.

The spelling of 16982281 in words is "sixteen million, nine hundred eighty-two thousand, two hundred eighty-one".