2165303215 has 8 divisors (see below), whose sum is σ = 2603574000. Its totient is φ = 1728769152.

The previous prime is 2165303197. The next prime is 2165303263. The reversal of 2165303215 is 5123035612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2165303215 - 2²⁵ = 2131748783 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431434 + ... + 436423.

It is an arithmetic number, because the mean of its divisors is an integer number (325446750).

Almost surely, 2^2165303215 is an apocalyptic number.

2165303215 is a deficient number, since it is larger than the sum of its proper divisors (438270785).

2165303215 is an equidigital number, since it uses as much as digits as its factorization.

2165303215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868361.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 2165303215 is about 46532.8186874597. The cubic root of 2165303215 is about 1293.7178596261.

Adding to 2165303215 its reverse (5123035612), we get a palindrome (7288338827).

The spelling of 2165303215 in words is "two billion, one hundred sixty-five million, three hundred three thousand, two hundred fifteen".