2194166366 has 16 divisors (see below), whose sum is σ = 3762399456. Its totient is φ = 940114176.

The previous prime is 2194166363. The next prime is 2194166371. The reversal of 2194166366 is 6636614912.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194166363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42650 + ... + 78786.

It is an arithmetic number, because the mean of its divisors is an integer number (235149966).

Almost surely, 2^2194166366 is an apocalyptic number.

2194166366 is a deficient number, since it is larger than the sum of its proper divisors (1568233090).

2194166366 is a wasteful number, since it uses less digits than its factorization.

2194166366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40483.

The product of its digits is 279936, while the sum is 44.

The square root of 2194166366 is about 46841.9295716989. The cubic root of 2194166366 is about 1299.4408573722.

The spelling of 2194166366 in words is "two billion, one hundred ninety-four million, one hundred sixty-six thousand, three hundred sixty-six".