165315413 has 4 divisors (see below), whose sum is σ = 165346380. Its totient is φ = 165284448.

The previous prime is 165315401. The next prime is 165315431. The reversal of 165315413 is 314513561.

165315413 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.

It can be written as a sum of positive squares in 2 ways, for example, as 38031889 + 127283524 = 6167^2 + 11282^2 .

It is a cyclic number.

It is not a de Polignac number, because 165315413 - 2¹⁰ = 165314389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165315433) 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, 5198 + ... + 18911.

It is an arithmetic number, because the mean of its divisors is an integer number (41336595).

Almost surely, 2^165315413 is an apocalyptic number.

It is an amenable number.

165315413 is a deficient number, since it is larger than the sum of its proper divisors (30967).

165315413 is an equidigital number, since it uses as much as digits as its factorization.

165315413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30966.

The product of its digits is 5400, while the sum is 29.

The square root of 165315413 is about 12857.5041512729. The cubic root of 165315413 is about 548.8299235501.

Adding to 165315413 its reverse (314513561), we get a palindrome (479828974).

The spelling of 165315413 in words is "one hundred sixty-five million, three hundred fifteen thousand, four hundred thirteen".