163705093 has 2 divisors, whose sum is σ = 163705094. Its totient is φ = 163705092.

The previous prime is 163705063. The next prime is 163705097. The reversal of 163705093 is 390507361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122257249 + 41447844 = 11057^2 + 6438^2 .

It is a cyclic number.

It is not a de Polignac number, because 163705093 - 2⁹ = 163704581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163705097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81852546 + 81852547.

It is an arithmetic number, because the mean of its divisors is an integer number (81852547).

Almost surely, 2^163705093 is an apocalyptic number.

It is an amenable number.

163705093 is a deficient number, since it is larger than the sum of its proper divisors (1).

163705093 is an equidigital number, since it uses as much as digits as its factorization.

163705093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 163705093 is about 12794.7291100672. The cubic root of 163705093 is about 547.0420743749.

The spelling of 163705093 in words is "one hundred sixty-three million, seven hundred five thousand, ninety-three".