165432489 has 4 divisors (see below), whose sum is σ = 220576656. Its totient is φ = 110288324.

The previous prime is 165432469. The next prime is 165432497. The reversal of 165432489 is 984234561.

165432489 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.

It is a cyclic number.

It is not a de Polignac number, because 165432489 - 2⁹ = 165431977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165432489.

It is not an unprimeable number, because it can be changed into a prime (165432409) 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, 27572079 + ... + 27572084.

It is an arithmetic number, because the mean of its divisors is an integer number (55144164).

Almost surely, 2^165432489 is an apocalyptic number.

It is an amenable number.

165432489 is a deficient number, since it is larger than the sum of its proper divisors (55144167).

165432489 is an equidigital number, since it uses as much as digits as its factorization.

165432489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55144166.

The product of its digits is 207360, while the sum is 42.

The square root of 165432489 is about 12862.0561731008. The cubic root of 165432489 is about 548.9594530125.

It can be divided in two parts, 1654 and 32489, that added together give a palindrome (34143).

The spelling of 165432489 in words is "one hundred sixty-five million, four hundred thirty-two thousand, four hundred eighty-nine".