163304489 has 2 divisors, whose sum is σ = 163304490. Its totient is φ = 163304488.

The previous prime is 163304467. The next prime is 163304513. The reversal of 163304489 is 984403361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145998889 + 17305600 = 12083^2 + 4160^2 .

It is a cyclic number.

It is not a de Polignac number, because 163304489 - 2¹² = 163300393 is a prime.

It is a super-2 number, since 2×163304489² = 53336712255102242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (163304989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81652244 + 81652245.

It is an arithmetic number, because the mean of its divisors is an integer number (81652245).

Almost surely, 2^163304489 is an apocalyptic number.

It is an amenable number.

163304489 is a deficient number, since it is larger than the sum of its proper divisors (1).

163304489 is an equidigital number, since it uses as much as digits as its factorization.

163304489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 163304489 is about 12779.0644806261. The cubic root of 163304489 is about 546.5954862622.

The spelling of 163304489 in words is "one hundred sixty-three million, three hundred four thousand, four hundred eighty-nine".