2179549889 has 24 divisors (see below), whose sum is σ = 2545530624. Its totient is φ = 1858313600.

The previous prime is 2179549817. The next prime is 2179549903. The reversal of 2179549889 is 9889459712.

It is not a de Polignac number, because 2179549889 - 2⁸ = 2179549633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2179549289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 638024 + ... + 641430.

It is an arithmetic number, because the mean of its divisors is an integer number (106063776).

Almost surely, 2^2179549889 is an apocalyptic number.

It is an amenable number.

2179549889 is a deficient number, since it is larger than the sum of its proper divisors (365980735).

2179549889 is a wasteful number, since it uses less digits than its factorization.

2179549889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757 (or 3746 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 62.

The square root of 2179549889 is about 46685.6497116619. The cubic root of 2179549889 is about 1296.5490105957.

The spelling of 2179549889 in words is "two billion, one hundred seventy-nine million, five hundred forty-nine thousand, eight hundred eighty-nine".