2162105278 has 16 divisors (see below), whose sum is σ = 3270411936. Its totient is φ = 1071993600.

The previous prime is 2162105251. The next prime is 2162105279. The reversal of 2162105278 is 8725012612.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162105279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173050 + ... + 185122.

It is an arithmetic number, because the mean of its divisors is an integer number (204400746).

Almost surely, 2^2162105278 is an apocalyptic number.

2162105278 is a deficient number, since it is larger than the sum of its proper divisors (1108306658).

2162105278 is a wasteful number, since it uses less digits than its factorization.

2162105278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12819.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 2162105278 is about 46498.4438234227. The cubic root of 2162105278 is about 1293.0806483859.

The spelling of 2162105278 in words is "two billion, one hundred sixty-two million, one hundred five thousand, two hundred seventy-eight".