16882181 has 2 divisors, whose sum is σ = 16882182. Its totient is φ = 16882180.

The previous prime is 16882163. The next prime is 16882193. The reversal of 16882181 is 18128861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 8031556 = 2975^2 + 2834^2 .

It is an emirp because it is prime and its reverse (18128861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16882181 is a prime.

It is a super-2 number, since 2×16882181² = 570016070633522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16882111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8441090 + 8441091.

It is an arithmetic number, because the mean of its divisors is an integer number (8441091).

Almost surely, 2^16882181 is an apocalyptic number.

It is an amenable number.

16882181 is a deficient number, since it is larger than the sum of its proper divisors (1).

16882181 is an equidigital number, since it uses as much as digits as its factorization.

16882181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 35.

The square root of 16882181 is about 4108.7931318089. The cubic root of 16882181 is about 256.5327700634.

The spelling of 16882181 in words is "sixteen million, eight hundred eighty-two thousand, one hundred eighty-one".