2168138 has 16 divisors (see below), whose sum is σ = 3737664. Its totient is φ = 924000.

The previous prime is 2168107. The next prime is 2168143. The reversal of 2168138 is 8318612.

It is a self number, because there is not a number n which added to its sum of digits gives 2168138.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3206 + ... + 3822.

It is an arithmetic number, because the mean of its divisors is an integer number (233604).

2^2168138 is an apocalyptic number.

2168138 is a deficient number, since it is larger than the sum of its proper divisors (1569526).

2168138 is a wasteful number, since it uses less digits than its factorization.

2168138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877.

The product of its digits is 2304, while the sum is 29.

The square root of 2168138 is about 1472.4598466512. The cubic root of 2168138 is about 129.4282185934.

The spelling of 2168138 in words is "two million, one hundred sixty-eight thousand, one hundred thirty-eight".