163942193 has 2 divisors, whose sum is σ = 163942194. Its totient is φ = 163942192.

The previous prime is 163942189. The next prime is 163942277. The reversal of 163942193 is 391249361.

163942193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160073104 + 3869089 = 12652^2 + 1967^2 .

It is a cyclic number.

It is not a de Polignac number, because 163942193 - 2² = 163942189 is a prime.

It is not a weakly prime, because it can be changed into another prime (163942123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81971096 + 81971097.

It is an arithmetic number, because the mean of its divisors is an integer number (81971097).

Almost surely, 2^163942193 is an apocalyptic number.

It is an amenable number.

163942193 is a deficient number, since it is larger than the sum of its proper divisors (1).

163942193 is an equidigital number, since it uses as much as digits as its factorization.

163942193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The square root of 163942193 is about 12803.9912917809. The cubic root of 163942193 is about 547.3060472415.

The spelling of 163942193 in words is "one hundred sixty-three million, nine hundred forty-two thousand, one hundred ninety-three".