2189538 has 32 divisors (see below), whose sum is σ = 5241600. Its totient is φ = 673488.

The previous prime is 2189533. The next prime is 2189543. The reversal of 2189538 is 8359812.

It is an interprime number because it is at equal distance from previous prime (2189533) and next prime (2189543).

It is not an unprimeable number, because it can be changed into a prime (2189533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858 + ... + 2261.

It is an arithmetic number, because the mean of its divisors is an integer number (163800).

2^2189538 is an apocalyptic number.

2189538 is an abundant number, since it is smaller than the sum of its proper divisors (3052062).

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

2189538 is a wasteful number, since it uses less digits than its factorization.

2189538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143 (or 3137 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2189538 is about 1479.7087551272. The cubic root of 2189538 is about 129.8526535684.

The spelling of 2189538 in words is "two million, one hundred eighty-nine thousand, five hundred thirty-eight".