2189258 has 4 divisors (see below), whose sum is σ = 3283890. Its totient is φ = 1094628.

The previous prime is 2189249. The next prime is 2189267. The reversal of 2189258 is 8529812.

2189258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2189249) and next prime (2189267).

It can be written as a sum of positive squares in only one way, i.e., 1646089 + 543169 = 1283^2 + 737^2 .

It is an Ulam number.

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

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 547313 + ... + 547316.

2^2189258 is an apocalyptic number.

2189258 is a deficient number, since it is larger than the sum of its proper divisors (1094632).

2189258 is a wasteful number, since it uses less digits than its factorization.

2189258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094631.

The product of its digits is 11520, while the sum is 35.

The square root of 2189258 is about 1479.6141388889. The cubic root of 2189258 is about 129.8471181095.

The spelling of 2189258 in words is "two million, one hundred eighty-nine thousand, two hundred fifty-eight".