2189348491 has 16 divisors (see below), whose sum is σ = 2419911648. Its totient is φ = 1964160000.

The previous prime is 2189348477. The next prime is 2189348527. The reversal of 2189348491 is 1948439812.

It is not a de Polignac number, because 2189348491 - 2⁷ = 2189348363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2189348401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395241 + ... + 400741.

It is an arithmetic number, because the mean of its divisors is an integer number (151244478).

Almost surely, 2^2189348491 is an apocalyptic number.

2189348491 is a deficient number, since it is larger than the sum of its proper divisors (230563157).

2189348491 is a wasteful number, since it uses less digits than its factorization.

2189348491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5982.

The product of its digits is 497664, while the sum is 49.

The square root of 2189348491 is about 46790.4743617758. The cubic root of 2189348491 is about 1298.4890712262.

The spelling of 2189348491 in words is "two billion, one hundred eighty-nine million, three hundred forty-eight thousand, four hundred ninety-one".