165168349 has 4 divisors (see below), whose sum is σ = 173861440. Its totient is φ = 156475260.

The previous prime is 165168331. The next prime is 165168373. The reversal of 165168349 is 943861561.

165168349 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 not a de Polignac number, because 165168349 - 2⁹ = 165167837 is a prime.

It is a super-2 number, since 2×165168349² = 54561167022771602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165168319) 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, 4346517 + ... + 4346554.

It is an arithmetic number, because the mean of its divisors is an integer number (43465360).

Almost surely, 2^165168349 is an apocalyptic number.

165168349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

165168349 is a deficient number, since it is larger than the sum of its proper divisors (8693091).

165168349 is an equidigital number, since it uses as much as digits as its factorization.

165168349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8693090.

The product of its digits is 155520, while the sum is 43.

The square root of 165168349 is about 12851.7838839595. The cubic root of 165168349 is about 548.6671295547.

The spelling of 165168349 in words is "one hundred sixty-five million, one hundred sixty-eight thousand, three hundred forty-nine".