2164342240 has 48 divisors (see below), whose sum is σ = 5116390272. Its totient is φ = 865206784.

The previous prime is 2164342237. The next prime is 2164342241. The reversal of 2164342240 is 422434612.

It is a junction number, because it is equal to n+sod(n) for n = 2164342199 and 2164342208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164342241) 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 7 ways as a sum of consecutive naturals, for example, 354897 + ... + 360943.

It is an arithmetic number, because the mean of its divisors is an integer number (106591464).

Almost surely, 2^2164342240 is an apocalyptic number.

2164342240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164342240 is an abundant number, since it is smaller than the sum of its proper divisors (2952048032).

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

2164342240 is a wasteful number, since it uses less digits than its factorization.

2164342240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8299 (or 8291 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 2164342240 is about 46522.4917647368. The cubic root of 2164342240 is about 1293.5264446356.

Adding to 2164342240 its reverse (422434612), we get a palindrome (2586776852).

The spelling of 2164342240 in words is "two billion, one hundred sixty-four million, three hundred forty-two thousand, two hundred forty".