2164523306 has 16 divisors (see below), whose sum is σ = 3594814560. Its totient is φ = 969188880.

The previous prime is 2164523287. The next prime is 2164523327. The reversal of 2164523306 is 6033254612.

It is a super-2 number, since 2×2164523306² = 9370322284434339272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732761 + ... + 735708.

It is an arithmetic number, because the mean of its divisors is an integer number (224675910).

Almost surely, 2^2164523306 is an apocalyptic number.

2164523306 is a deficient number, since it is larger than the sum of its proper divisors (1430291254).

2164523306 is a wasteful number, since it uses less digits than its factorization.

2164523306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468549.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2164523306 is about 46524.4377290043. The cubic root of 2164523306 is about 1293.5625151984.

Adding to 2164523306 its reverse (6033254612), we get a palindrome (8197777918).

The spelling of 2164523306 in words is "two billion, one hundred sixty-four million, five hundred twenty-three thousand, three hundred six".