2830181 has 2 divisors, whose sum is σ = 2830182. Its totient is φ = 2830180.

The previous prime is 2830153. The next prime is 2830187. The reversal of 2830181 is 1810382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1779556 + 1050625 = 1334^2 + 1025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2830181 is a prime.

It is a super-2 number, since 2×2830181² = 16019848985522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2830187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1415090 + 1415091.

It is an arithmetic number, because the mean of its divisors is an integer number (1415091).

2^2830181 is an apocalyptic number.

It is an amenable number.

2830181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2830181 is an equidigital number, since it uses as much as digits as its factorization.

2830181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2830181 is about 1682.3141799319. The cubic root of 2830181 is about 141.4505814516.

It can be divided in two parts, 28301 and 81, that added together give a palindrome (28382).

The spelling of 2830181 in words is "two million, eight hundred thirty thousand, one hundred eighty-one".