2188939104 has 72 divisors (see below), whose sum is σ = 6790695912. Its totient is φ = 663313920.

The previous prime is 2188939097. The next prime is 2188939133. The reversal of 2188939104 is 4019398812.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 2188939104.

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 11 ways as a sum of consecutive naturals, for example, 342309 + ... + 348644.

It is an arithmetic number, because the mean of its divisors is an integer number (94315221).

Almost surely, 2^2188939104 is an apocalyptic number.

2188939104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2188939104 is an abundant number, since it is smaller than the sum of its proper divisors (4601756808).

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

2188939104 is a wasteful number, since it uses less digits than its factorization.

2188939104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690980 (or 690969 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2188939104 is about 46786.0994740959. The cubic root of 2188939104 is about 1298.4081312137.

The spelling of 2188939104 in words is "two billion, one hundred eighty-eight million, nine hundred thirty-nine thousand, one hundred four".