163264489 has 2 divisors, whose sum is σ = 163264490. Its totient is φ = 163264488.

The previous prime is 163264471. The next prime is 163264513. The reversal of 163264489 is 984462361.

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., 149817600 + 13446889 = 12240^2 + 3667^2 .

It is a cyclic number.

It is not a de Polignac number, because 163264489 - 2⁹ = 163263977 is a prime.

It is a super-2 number, since 2×163264489² = 53310586736862242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (163264459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81632244 + 81632245.

It is an arithmetic number, because the mean of its divisors is an integer number (81632245).

Almost surely, 2^163264489 is an apocalyptic number.

It is an amenable number.

163264489 is a deficient number, since it is larger than the sum of its proper divisors (1).

163264489 is an equidigital number, since it uses as much as digits as its factorization.

163264489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 163264489 is about 12777.4993249853. The cubic root of 163264489 is about 546.5508546971.

The spelling of 163264489 in words is "one hundred sixty-three million, two hundred sixty-four thousand, four hundred eighty-nine".