30005189 has 2 divisors, whose sum is σ = 30005190. Its totient is φ = 30005188.

The previous prime is 30005167. The next prime is 30005191. The reversal of 30005189 is 98150003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29430625 + 574564 = 5425^2 + 758^2 .

It is a cyclic number.

It is not a de Polignac number, because 30005189 - 2¹² = 30001093 is a prime.

It is a super-2 number, since 2×30005189² = 1800622733851442, which contains 22 as substring.

Together with 30005191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30005149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15002594 + 15002595.

It is an arithmetic number, because the mean of its divisors is an integer number (15002595).

Almost surely, 2^30005189 is an apocalyptic number.

It is an amenable number.

30005189 is a deficient number, since it is larger than the sum of its proper divisors (1).

30005189 is an equidigital number, since it uses as much as digits as its factorization.

30005189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 30005189 is about 5477.6992432955. The cubic root of 30005189 is about 310.7411644842.

The spelling of 30005189 in words is "thirty million, five thousand, one hundred eighty-nine".