163000009 has 2 divisors, whose sum is σ = 163000010. Its totient is φ = 163000008.

The previous prime is 163000007. The next prime is 163000037. The reversal of 163000009 is 900000361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86490000 + 76510009 = 9300^2 + 8747^2 .

It is a cyclic number.

It is not a de Polignac number, because 163000009 - 2¹ = 163000007 is a prime.

Together with 163000007, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 163000009.

It is not a weakly prime, because it can be changed into another prime (163000003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81500004 + 81500005.

It is an arithmetic number, because the mean of its divisors is an integer number (81500005).

Almost surely, 2^163000009 is an apocalyptic number.

It is an amenable number.

163000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

163000009 is an equidigital number, since it uses as much as digits as its factorization.

163000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 163000009 is about 12767.1456872709. The cubic root of 163000009 is about 546.2555671819.

It can be divided in two parts, 16 and 3000009, that added together give a triangular number (3000025 = T₂₄₄₉).

The spelling of 163000009 in words is "one hundred sixty-three million, nine", and thus it is an aban number.