2166433423 has 24 divisors (see below), whose sum is σ = 2766859344. Its totient is φ = 1677312000.

The previous prime is 2166433421. The next prime is 2166433441. The reversal of 2166433423 is 3243346612.

It is not a de Polignac number, because 2166433423 - 2¹ = 2166433421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166433421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71823 + ... + 97423.

It is an arithmetic number, because the mean of its divisors is an integer number (115285806).

Almost surely, 2^2166433423 is an apocalyptic number.

2166433423 is a deficient number, since it is larger than the sum of its proper divisors (600425921).

2166433423 is a wasteful number, since it uses less digits than its factorization.

2166433423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25783 (or 25776 counting only the distinct ones).

The product of its digits is 62208, while the sum is 34.

The square root of 2166433423 is about 46544.9613062467. The cubic root of 2166433423 is about 1293.9429113939.

The spelling of 2166433423 in words is "two billion, one hundred sixty-six million, four hundred thirty-three thousand, four hundred twenty-three".