165192249 has 4 divisors (see below), whose sum is σ = 220256336. Its totient is φ = 110128164.

The previous prime is 165192241. The next prime is 165192253. The reversal of 165192249 is 942291561.

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 not a de Polignac number, because 165192249 - 2³ = 165192241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165192241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27532039 + ... + 27532044.

It is an arithmetic number, because the mean of its divisors is an integer number (55064084).

Almost surely, 2^165192249 is an apocalyptic number.

It is an amenable number.

165192249 is a deficient number, since it is larger than the sum of its proper divisors (55064087).

165192249 is an equidigital number, since it uses as much as digits as its factorization.

165192249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55064086.

The product of its digits is 38880, while the sum is 39.

The square root of 165192249 is about 12852.7136823318. The cubic root of 165192249 is about 548.6935924778.

The spelling of 165192249 in words is "one hundred sixty-five million, one hundred ninety-two thousand, two hundred forty-nine".