165160213 has 4 divisors (see below), whose sum is σ = 166365900. Its totient is φ = 163954528.

The previous prime is 165160211. The next prime is 165160273. The reversal of 165160213 is 312061561.

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 52099524 + 113060689 = 7218^2 + 10633^2 .

It is a cyclic number.

It is not a de Polignac number, because 165160213 - 2¹ = 165160211 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 (165160211) 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, 602638 + ... + 602911.

It is an arithmetic number, because the mean of its divisors is an integer number (41591475).

Almost surely, 2^165160213 is an apocalyptic number.

It is an amenable number.

165160213 is a deficient number, since it is larger than the sum of its proper divisors (1205687).

165160213 is a wasteful number, since it uses less digits than its factorization.

165160213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205686.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 165160213 is about 12851.4673481280. The cubic root of 165160213 is about 548.6581205061.

The spelling of 165160213 in words is "one hundred sixty-five million, one hundred sixty thousand, two hundred thirteen".