163316449 has 2 divisors, whose sum is σ = 163316450. Its totient is φ = 163316448.

The previous prime is 163316443. The next prime is 163316471. The reversal of 163316449 is 944613361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95550625 + 67765824 = 9775^2 + 8232^2 .

It is a cyclic number.

It is not a de Polignac number, because 163316449 - 2³ = 163316441 is a prime.

It is not a weakly prime, because it can be changed into another prime (163316441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81658224 + 81658225.

It is an arithmetic number, because the mean of its divisors is an integer number (81658225).

Almost surely, 2^163316449 is an apocalyptic number.

It is an amenable number.

163316449 is a deficient number, since it is larger than the sum of its proper divisors (1).

163316449 is an equidigital number, since it uses as much as digits as its factorization.

163316449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 37.

The square root of 163316449 is about 12779.5324249364. The cubic root of 163316449 is about 546.6088296849.

The spelling of 163316449 in words is "one hundred sixty-three million, three hundred sixteen thousand, four hundred forty-nine".