30189169 has 2 divisors, whose sum is σ = 30189170. Its totient is φ = 30189168.

The previous prime is 30189167. The next prime is 30189199. The reversal of 30189169 is 96198103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24137569 + 6051600 = 4913^2 + 2460^2 .

It is an emirp because it is prime and its reverse (96198103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30189169 - 2¹ = 30189167 is a prime.

It is a super-2 number, since 2×30189169² = 1822771849821122, which contains 22 as substring.

Together with 30189167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30189167) 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, 15094584 + 15094585.

It is an arithmetic number, because the mean of its divisors is an integer number (15094585).

Almost surely, 2^30189169 is an apocalyptic number.

It is an amenable number.

30189169 is a deficient number, since it is larger than the sum of its proper divisors (1).

30189169 is an equidigital number, since it uses as much as digits as its factorization.

30189169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 30189169 is about 5494.4671261188. The cubic root of 30189169 is about 311.3749849384.

The spelling of 30189169 in words is "thirty million, one hundred eighty-nine thousand, one hundred sixty-nine".