165289149 has 12 divisors (see below), whose sum is σ = 242798400. Its totient is φ = 108324744.

The previous prime is 165289141. The next prime is 165289169. The reversal of 165289149 is 941982561.

It is not a de Polignac number, because 165289149 - 2³ = 165289141 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165289141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155109 + ... + 156170.

It is an arithmetic number, because the mean of its divisors is an integer number (20233200).

Almost surely, 2^165289149 is an apocalyptic number.

It is an amenable number.

165289149 is a deficient number, since it is larger than the sum of its proper divisors (77509251).

165289149 is a wasteful number, since it uses less digits than its factorization.

165289149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311344 (or 311341 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 165289149 is about 12856.4827616265. The cubic root of 165289149 is about 548.8008574309.

The spelling of 165289149 in words is "one hundred sixty-five million, two hundred eighty-nine thousand, one hundred forty-nine".