2165240202 has 8 divisors (see below), whose sum is σ = 4330480416. Its totient is φ = 721746732.

The previous prime is 2165240197. The next prime is 2165240213. The reversal of 2165240202 is 2020425612.

It is a happy number.

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

2165240202 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180436678 + ... + 180436689.

It is an arithmetic number, because the mean of its divisors is an integer number (541310052).

Almost surely, 2^2165240202 is an apocalyptic number.

2165240202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2165240202 is a wasteful number, since it uses less digits than its factorization.

2165240202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360873372.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2165240202 is about 46532.1416012631. The cubic root of 2165240202 is about 1293.7053099081.

Adding to 2165240202 its reverse (2020425612), we get a palindrome (4185665814).

The spelling of 2165240202 in words is "two billion, one hundred sixty-five million, two hundred forty thousand, two hundred two".