30169189 has 2 divisors, whose sum is σ = 30169190. Its totient is φ = 30169188.

The previous prime is 30169141. The next prime is 30169211. The reversal of 30169189 is 98196103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29757025 + 412164 = 5455^2 + 642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30169189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30169109) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15084594 + 15084595.

It is an arithmetic number, because the mean of its divisors is an integer number (15084595).

Almost surely, 2^30169189 is an apocalyptic number.

It is an amenable number.

30169189 is a deficient number, since it is larger than the sum of its proper divisors (1).

30169189 is an equidigital number, since it uses as much as digits as its factorization.

30169189 is an evil number, because the sum of its binary digits is even.

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

The square root of 30169189 is about 5492.6486324905. The cubic root of 30169189 is about 311.3062776793.

The spelling of 30169189 in words is "thirty million, one hundred sixty-nine thousand, one hundred eighty-nine".