163708073 has 2 divisors, whose sum is σ = 163708074. Its totient is φ = 163708072.

The previous prime is 163708049. The next prime is 163708093. The reversal of 163708073 is 370807361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163507369 + 200704 = 12787^2 + 448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163708073 is a prime.

It is not a weakly prime, because it can be changed into another prime (163708033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81854036 + 81854037.

It is an arithmetic number, because the mean of its divisors is an integer number (81854037).

Almost surely, 2^163708073 is an apocalyptic number.

It is an amenable number.

163708073 is a deficient number, since it is larger than the sum of its proper divisors (1).

163708073 is an equidigital number, since it uses as much as digits as its factorization.

163708073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 163708073 is about 12794.8455637417. The cubic root of 163708073 is about 547.0453937086.

The spelling of 163708073 in words is "one hundred sixty-three million, seven hundred eight thousand, seventy-three".