163000073 has 2 divisors, whose sum is σ = 163000074. Its totient is φ = 163000072.

The previous prime is 163000037. The next prime is 163000091. The reversal of 163000073 is 370000361.

Together with previous prime (163000037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145250704 + 17749369 = 12052^2 + 4213^2 .

It is a cyclic number.

It is not a de Polignac number, because 163000073 - 2⁶ = 163000009 is a prime.

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, 81500036 + 81500037.

It is an arithmetic number, because the mean of its divisors is an integer number (81500037).

Almost surely, 2^163000073 is an apocalyptic number.

It is an amenable number.

163000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

163000073 is an equidigital number, since it uses as much as digits as its factorization.

163000073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 163000073 is about 12767.1481937040. The cubic root of 163000073 is about 546.2556386755.

The spelling of 163000073 in words is "one hundred sixty-three million, seventy-three", and thus it is an aban number.