162489489 has 4 divisors (see below), whose sum is σ = 216652656. Its totient is φ = 108326324.

The previous prime is 162489487. The next prime is 162489499. The reversal of 162489489 is 984984261.

162489489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984984261 = 3 ⋅328328087.

It is a cyclic number.

It is not a de Polignac number, because 162489489 - 2¹ = 162489487 is a prime.

It is a super-2 number, since 2×162489489² = 52805668070962242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (162489487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27081579 + ... + 27081584.

It is an arithmetic number, because the mean of its divisors is an integer number (54163164).

Almost surely, 2^162489489 is an apocalyptic number.

It is an amenable number.

162489489 is a deficient number, since it is larger than the sum of its proper divisors (54163167).

162489489 is an equidigital number, since it uses as much as digits as its factorization.

162489489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54163166.

The product of its digits is 995328, while the sum is 51.

The square root of 162489489 is about 12747.1365019756. The cubic root of 162489489 is about 545.6846755019.

Subtracting from 162489489 its product of digits (995328), we obtain a palindrome (161494161).

The spelling of 162489489 in words is "one hundred sixty-two million, four hundred eighty-nine thousand, four hundred eighty-nine".