2161038 has 32 divisors (see below), whose sum is σ = 4769280. Its totient is φ = 647360.

The previous prime is 2161031. The next prime is 2161087. The reversal of 2161038 is 8301612.

2161038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8923 + ... + 9161.

It is an arithmetic number, because the mean of its divisors is an integer number (149040).

2^2161038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2384640).

2161038 is an abundant number, since it is smaller than the sum of its proper divisors (2608242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161038 is a wasteful number, since it uses less digits than its factorization.

2161038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2161038 is about 1470.0469380261. The cubic root of 2161038 is about 129.2867845971.

The spelling of 2161038 in words is "two million, one hundred sixty-one thousand, thirty-eight".