2813165 has 4 divisors (see below), whose sum is σ = 3375804. Its totient is φ = 2250528.

The previous prime is 2813149. The next prime is 2813171. The reversal of 2813165 is 5613182.

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 2033476 + 779689 = 1426^2 + 883^2 .

It is a cyclic number.

It is not a de Polignac number, because 2813165 - 2⁴ = 2813149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281312 + ... + 281321.

It is an arithmetic number, because the mean of its divisors is an integer number (843951).

2^2813165 is an apocalyptic number.

It is an amenable number.

2813165 is a deficient number, since it is larger than the sum of its proper divisors (562639).

2813165 is an equidigital number, since it uses as much as digits as its factorization.

2813165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562638.

The product of its digits is 1440, while the sum is 26.

The square root of 2813165 is about 1677.2492361006. The cubic root of 2813165 is about 141.1665285925.

The spelling of 2813165 in words is "two million, eight hundred thirteen thousand, one hundred sixty-five".