163459073 has 2 divisors, whose sum is σ = 163459074. Its totient is φ = 163459072.

The previous prime is 163459069. The next prime is 163459117. The reversal of 163459073 is 370954361.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85895824 + 77563249 = 9268^2 + 8807^2 .

It is an emirp because it is prime and its reverse (370954361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163459073 - 2² = 163459069 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_9157493 and since 163459073 and 9157493 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (163459013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81729536 + 81729537.

It is an arithmetic number, because the mean of its divisors is an integer number (81729537).

Almost surely, 2^163459073 is an apocalyptic number.

It is an amenable number.

163459073 is a deficient number, since it is larger than the sum of its proper divisors (1).

163459073 is an equidigital number, since it uses as much as digits as its factorization.

163459073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 163459073 is about 12785.1113800389. Note that the first 3 decimals coincide. The cubic root of 163459073 is about 546.7679009342.

The spelling of 163459073 in words is "one hundred sixty-three million, four hundred fifty-nine thousand, seventy-three".