165165489 has 48 divisors (see below), whose sum is σ = 264176640. Its totient is φ = 98979840.

The previous prime is 165165463. The next prime is 165165503. The reversal of 165165489 is 984561561.

165165489 is a `hidden beast` number, since 1 + 6 + 5 + 165 + 489 = 666.

165165489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165165489 - 2⁹ = 165164977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165165449) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 459892 + ... + 460250.

It is an arithmetic number, because the mean of its divisors is an integer number (5503680).

Almost surely, 2^165165489 is an apocalyptic number.

It is an amenable number.

165165489 is a deficient number, since it is larger than the sum of its proper divisors (99011151).

165165489 is a wasteful number, since it uses less digits than its factorization.

165165489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 507 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 165165489 is about 12851.6726148778. The cubic root of 165165489 is about 548.6639626908.

The spelling of 165165489 in words is "one hundred sixty-five million, one hundred sixty-five thousand, four hundred eighty-nine".