163793009 has 2 divisors, whose sum is σ = 163793010. Its totient is φ = 163793008.

The previous prime is 163792963. The next prime is 163793137. The reversal of 163793009 is 900397361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158256400 + 5536609 = 12580^2 + 2353^2 .

It is a cyclic number.

It is not a de Polignac number, because 163793009 - 2⁸ = 163792753 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (163793209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81896504 + 81896505.

It is an arithmetic number, because the mean of its divisors is an integer number (81896505).

Almost surely, 2^163793009 is an apocalyptic number.

It is an amenable number.

163793009 is a deficient number, since it is larger than the sum of its proper divisors (1).

163793009 is an equidigital number, since it uses as much as digits as its factorization.

163793009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 163793009 is about 12798.1642824274. The cubic root of 163793009 is about 547.1399844710.

The spelling of 163793009 in words is "one hundred sixty-three million, seven hundred ninety-three thousand, nine".