163812193 has 2 divisors, whose sum is σ = 163812194. Its totient is φ = 163812192.

The previous prime is 163812161. The next prime is 163812217. The reversal of 163812193 is 391218361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107682129 + 56130064 = 10377^2 + 7492^2 .

It is a cyclic number.

It is not a de Polignac number, because 163812193 - 2⁵ = 163812161 is a prime.

It is not a weakly prime, because it can be changed into another prime (163812113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81906096 + 81906097.

It is an arithmetic number, because the mean of its divisors is an integer number (81906097).

Almost surely, 2^163812193 is an apocalyptic number.

It is an amenable number.

163812193 is a deficient number, since it is larger than the sum of its proper divisors (1).

163812193 is an equidigital number, since it uses as much as digits as its factorization.

163812193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 163812193 is about 12798.9137429705. The cubic root of 163812193 is about 547.1613446088.

It can be divided in two parts, 1638 and 12193, that added together give a palindrome (13831).

The spelling of 163812193 in words is "one hundred sixty-three million, eight hundred twelve thousand, one hundred ninety-three".