163607189 has 2 divisors, whose sum is σ = 163607190. Its totient is φ = 163607188.

The previous prime is 163607161. The next prime is 163607203. The reversal of 163607189 is 981706361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154504900 + 9102289 = 12430^2 + 3017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163607189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163607159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81803594 + 81803595.

It is an arithmetic number, because the mean of its divisors is an integer number (81803595).

Almost surely, 2^163607189 is an apocalyptic number.

It is an amenable number.

163607189 is a deficient number, since it is larger than the sum of its proper divisors (1).

163607189 is an equidigital number, since it uses as much as digits as its factorization.

163607189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 163607189 is about 12790.9025873861. The cubic root of 163607189 is about 546.9329996020.

The spelling of 163607189 in words is "one hundred sixty-three million, six hundred seven thousand, one hundred eighty-nine".