2188095840 has 432 divisors, whose sum is σ = 9116216928. Its totient is φ = 466550784.

The previous prime is 2188095829. The next prime is 2188095881. The reversal of 2188095840 is 485908812.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 71 ways as a sum of consecutive naturals, for example, 19363624 + ... + 19363736.

It is an arithmetic number, because the mean of its divisors is an integer number (21102354).

Almost surely, 2^2188095840 is an apocalyptic number.

2188095840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2188095840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4558108464).

2188095840 is an abundant number, since it is smaller than the sum of its proper divisors (6928121088).

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

2188095840 is a wasteful number, since it uses less digits than its factorization.

2188095840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 2188095840 is about 46777.0866985108. The cubic root of 2188095840 is about 1298.2413774559.

The spelling of 2188095840 in words is "two billion, one hundred eighty-eight million, ninety-five thousand, eight hundred forty".