2188538 has 16 divisors (see below), whose sum is σ = 3697920. Its totient is φ = 962400.

The previous prime is 2188531. The next prime is 2188541. The reversal of 2188538 is 8358812.

2188538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2188498 and 2188507.

It is not an unprimeable number, because it can be changed into a prime (2188531) 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 7 ways as a sum of consecutive naturals, for example, 923 + ... + 2286.

It is an arithmetic number, because the mean of its divisors is an integer number (231120).

2^2188538 is an apocalyptic number.

2188538 is a deficient number, since it is larger than the sum of its proper divisors (1509382).

2188538 is a wasteful number, since it uses less digits than its factorization.

2188538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253.

The product of its digits is 15360, while the sum is 35.

The square root of 2188538 is about 1479.3708122036. The cubic root of 2188538 is about 129.8328819047.

The spelling of 2188538 in words is "two million, one hundred eighty-eight thousand, five hundred thirty-eight".