30473189 has 2 divisors, whose sum is σ = 30473190. Its totient is φ = 30473188.

The previous prime is 30473167. The next prime is 30473203. The reversal of 30473189 is 98137403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28890625 + 1582564 = 5375^2 + 1258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30473189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30473389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15236594 + 15236595.

It is an arithmetic number, because the mean of its divisors is an integer number (15236595).

Almost surely, 2^30473189 is an apocalyptic number.

It is an amenable number.

30473189 is a deficient number, since it is larger than the sum of its proper divisors (1).

30473189 is an equidigital number, since it uses as much as digits as its factorization.

30473189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 30473189 is about 5520.2526210310. The cubic root of 30473189 is about 312.3484115990.

The spelling of 30473189 in words is "thirty million, four hundred seventy-three thousand, one hundred eighty-nine".