2189678432 has 24 divisors (see below), whose sum is σ = 4312035000. Its totient is φ = 1094558464.

The previous prime is 2189678429. The next prime is 2189678479. The reversal of 2189678432 is 2348769812.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 181319 + ... + 193017.

It is an arithmetic number, because the mean of its divisors is an integer number (179668125).

Almost surely, 2^2189678432 is an apocalyptic number.

It is an amenable number.

2189678432 is a deficient number, since it is larger than the sum of its proper divisors (2122356568).

2189678432 is a wasteful number, since it uses less digits than its factorization.

2189678432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17558 (or 17550 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 2189678432 is about 46793.9999572595. Note that the first 4 decimals coincide. The cubic root of 2189678432 is about 1298.5542966064.

The spelling of 2189678432 in words is "two billion, one hundred eighty-nine million, six hundred seventy-eight thousand, four hundred thirty-two".