2105442166 has 8 divisors (see below), whose sum is σ = 3267065520. Its totient is φ = 1016420328.

The previous prime is 2105442151. The next prime is 2105442169. The reversal of 2105442166 is 6612445012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105442169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18150306 + ... + 18150421.

It is an arithmetic number, because the mean of its divisors is an integer number (408383190).

Almost surely, 2^2105442166 is an apocalyptic number.

2105442166 is a deficient number, since it is larger than the sum of its proper divisors (1161623354).

2105442166 is a wasteful number, since it uses less digits than its factorization.

2105442166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36300758.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2105442166 is about 45885.0974282501. The cubic root of 2105442166 is about 1281.6844209978.

Adding to 2105442166 its reverse (6612445012), we get a palindrome (8717887178).

The spelling of 2105442166 in words is "two billion, one hundred five million, four hundred forty-two thousand, one hundred sixty-six".