163589489 has 18 divisors (see below), whose sum is σ = 192743334. Its totient is φ = 138438720.

The previous prime is 163589483. The next prime is 163589513. The reversal of 163589489 is 984985361.

It can be written as a sum of positive squares in 3 ways, for example, as 65480464 + 98109025 = 8092^2 + 9905^2 .

It is not a de Polignac number, because 163589489 - 2⁴ = 163589473 is a prime.

It is a super-2 number, since 2×163589489² = 53523041822562242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163589489.

It is not an unprimeable number, because it can be changed into a prime (163589483) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 582029 + ... + 582309.

It is an arithmetic number, because the mean of its divisors is an integer number (10707963).

Almost surely, 2^163589489 is an apocalyptic number.

It is an amenable number.

163589489 is a deficient number, since it is larger than the sum of its proper divisors (29153845).

163589489 is an equidigital number, since it uses as much as digits as its factorization.

163589489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 397 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The square root of 163589489 is about 12790.2106706653. The cubic root of 163589489 is about 546.9132754011.

The spelling of 163589489 in words is "one hundred sixty-three million, five hundred eighty-nine thousand, four hundred eighty-nine".