2163423206 has 24 divisors (see below), whose sum is σ = 3799978416. Its totient is φ = 921034800.

The previous prime is 2163423149. The next prime is 2163423209. The reversal of 2163423206 is 6023243612.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163423209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58301 + ... + 87896.

It is an arithmetic number, because the mean of its divisors is an integer number (158332434).

Almost surely, 2^2163423206 is an apocalyptic number.

2163423206 is a deficient number, since it is larger than the sum of its proper divisors (1636555210).

2163423206 is a wasteful number, since it uses less digits than its factorization.

2163423206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146364 (or 146357 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 2163423206 is about 46512.6134075478. The cubic root of 2163423206 is about 1293.3433307909.

Adding to 2163423206 its reverse (6023243612), we get a palindrome (8186666818).

The spelling of 2163423206 in words is "two billion, one hundred sixty-three million, four hundred twenty-three thousand, two hundred six".