163169393 has 2 divisors, whose sum is σ = 163169394. Its totient is φ = 163169392.

The previous prime is 163169389. The next prime is 163169441. The reversal of 163169393 is 393961361.

It is a happy number.

163169393 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., 101263969 + 61905424 = 10063^2 + 7868^2 .

It is a cyclic number.

It is not a de Polignac number, because 163169393 - 2² = 163169389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163169393.

It is not a weakly prime, because it can be changed into another prime (163169353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81584696 + 81584697.

It is an arithmetic number, because the mean of its divisors is an integer number (81584697).

Almost surely, 2^163169393 is an apocalyptic number.

It is an amenable number.

163169393 is a deficient number, since it is larger than the sum of its proper divisors (1).

163169393 is an equidigital number, since it uses as much as digits as its factorization.

163169393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 41.

The square root of 163169393 is about 12773.7775540362. Note that the first 3 decimals coincide. The cubic root of 163169393 is about 546.4447183396. Note that the first 3 decimals are identical.

The spelling of 163169393 in words is "one hundred sixty-three million, one hundred sixty-nine thousand, three hundred ninety-three".