163042549 has 2 divisors, whose sum is σ = 163042550. Its totient is φ = 163042548.

The previous prime is 163042513. The next prime is 163042567. The reversal of 163042549 is 945240361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152349649 + 10692900 = 12343^2 + 3270^2 .

It is a cyclic number.

It is not a de Polignac number, because 163042549 - 2¹⁹ = 162518261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163042589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81521274 + 81521275.

It is an arithmetic number, because the mean of its divisors is an integer number (81521275).

Almost surely, 2^163042549 is an apocalyptic number.

It is an amenable number.

163042549 is a deficient number, since it is larger than the sum of its proper divisors (1).

163042549 is an equidigital number, since it uses as much as digits as its factorization.

163042549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 163042549 is about 12768.8115735177. The cubic root of 163042549 is about 546.3030839290.

The spelling of 163042549 in words is "one hundred sixty-three million, forty-two thousand, five hundred forty-nine".