2215165313 has 4 divisors (see below), whose sum is σ = 2221104468. Its totient is φ = 2209226160.

The previous prime is 2215165301. The next prime is 2215165327. The reversal of 2215165313 is 3135615122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3135615122 = 2 ⋅1567807561.

It can be written as a sum of positive squares in 2 ways, for example, as 979502209 + 1235663104 = 31297^2 + 35152^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215165313 - 2²⁴ = 2198388097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215165333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2969018 + ... + 2969763.

It is an arithmetic number, because the mean of its divisors is an integer number (555276117).

Almost surely, 2^2215165313 is an apocalyptic number.

It is an amenable number.

2215165313 is a deficient number, since it is larger than the sum of its proper divisors (5939155).

2215165313 is an equidigital number, since it uses as much as digits as its factorization.

2215165313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939154.

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

The square root of 2215165313 is about 47065.5427356362. The cubic root of 2215165313 is about 1303.5730723243.

The spelling of 2215165313 in words is "two billion, two hundred fifteen million, one hundred sixty-five thousand, three hundred thirteen".