2168156 has 12 divisors (see below), whose sum is σ = 3925320. Its totient is φ = 1046640.

The previous prime is 2168149. The next prime is 2168183. The reversal of 2168156 is 6518612.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9230 + ... + 9461.

It is an arithmetic number, because the mean of its divisors is an integer number (327110).

2^2168156 is an apocalyptic number.

It is an amenable number.

2168156 is a deficient number, since it is larger than the sum of its proper divisors (1757164).

2168156 is a wasteful number, since it uses less digits than its factorization.

2168156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18724 (or 18722 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2168156 is about 1472.4659588595. The cubic root of 2168156 is about 129.4285767658.

The spelling of 2168156 in words is "two million, one hundred sixty-eight thousand, one hundred fifty-six".