30946189 has 2 divisors, whose sum is σ = 30946190. Its totient is φ = 30946188.

The previous prime is 30946177. The next prime is 30946207. The reversal of 30946189 is 98164903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17682025 + 13264164 = 4205^2 + 3642^2 .

It is a cyclic number.

It is not a de Polignac number, because 30946189 - 2¹⁹ = 30421901 is a prime.

It is a super-2 number, since 2×30946189² = 1915333227247442, 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 (30946129) 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, 15473094 + 15473095.

It is an arithmetic number, because the mean of its divisors is an integer number (15473095).

Almost surely, 2^30946189 is an apocalyptic number.

It is an amenable number.

30946189 is a deficient number, since it is larger than the sum of its proper divisors (1).

30946189 is an equidigital number, since it uses as much as digits as its factorization.

30946189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 30946189 is about 5562.9298935004. The cubic root of 30946189 is about 313.9561956285.

It can be divided in two parts, 3094 and 6189, that multiplied together give a triangular number (19148766 = T₆₁₈₈).

The spelling of 30946189 in words is "thirty million, nine hundred forty-six thousand, one hundred eighty-nine".