165237449 has 8 divisors (see below), whose sum is σ = 182757960. Its totient is φ = 148404096.

The previous prime is 165237439. The next prime is 165237487. The reversal of 165237449 is 944732561.

165237449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 40513225 + 124724224 = 6365^2 + 11168^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165237449 - 2¹⁶ = 165171913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165237419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171284 + ... + 172245.

It is an arithmetic number, because the mean of its divisors is an integer number (22844745).

Almost surely, 2^165237449 is an apocalyptic number.

It is an amenable number.

165237449 is a deficient number, since it is larger than the sum of its proper divisors (17520511).

165237449 is a wasteful number, since it uses less digits than its factorization.

165237449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343579.

The product of its digits is 181440, while the sum is 41.

The square root of 165237449 is about 12854.4719455915. The cubic root of 165237449 is about 548.7436325349.

The spelling of 165237449 in words is "one hundred sixty-five million, two hundred thirty-seven thousand, four hundred forty-nine".