2166434364 has 12 divisors (see below), whose sum is σ = 5055013544. Its totient is φ = 722144784.

The previous prime is 2166434363. The next prime is 2166434371. The reversal of 2166434364 is 4634346612.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166434363) 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 3 ways as a sum of consecutive naturals, for example, 90268087 + ... + 90268110.

Almost surely, 2^2166434364 is an apocalyptic number.

It is an amenable number.

2166434364 is an abundant number, since it is smaller than the sum of its proper divisors (2888579180).

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

2166434364 is a wasteful number, since it uses less digits than its factorization.

2166434364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180536204 (or 180536202 counting only the distinct ones).

The product of its digits is 248832, while the sum is 39.

The square root of 2166434364 is about 46544.9714147511. The cubic root of 2166434364 is about 1293.9430987372.

The spelling of 2166434364 in words is "two billion, one hundred sixty-six million, four hundred thirty-four thousand, three hundred sixty-four".