2188541768 has 16 divisors (see below), whose sum is σ = 4689732480. Its totient is φ = 937946448.

The previous prime is 2188541737. The next prime is 2188541783. The reversal of 2188541768 is 8671458812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19540496 + ... + 19540607.

It is an arithmetic number, because the mean of its divisors is an integer number (293108280).

Almost surely, 2^2188541768 is an apocalyptic number.

2188541768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2188541768 is an abundant number, since it is smaller than the sum of its proper divisors (2501190712).

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

2188541768 is a wasteful number, since it uses less digits than its factorization.

2188541768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39081116 (or 39081112 counting only the distinct ones).

The product of its digits is 860160, while the sum is 50.

The square root of 2188541768 is about 46781.8529774099. The cubic root of 2188541768 is about 1298.3295641564.

The spelling of 2188541768 in words is "two billion, one hundred eighty-eight million, five hundred forty-one thousand, seven hundred sixty-eight".