2188601856 has 360 divisors, whose sum is σ = 7641073440. Its totient is φ = 623572992.

The previous prime is 2188601819. The next prime is 2188601867. The reversal of 2188601856 is 6581068812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6096205 + ... + 6096563.

It is an arithmetic number, because the mean of its divisors is an integer number (21225204).

Almost surely, 2^2188601856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2188601856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3820536720).

2188601856 is an abundant number, since it is smaller than the sum of its proper divisors (5452471584).

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

2188601856 is an frugal number, since it uses more digits than its factorization.

2188601856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 371 counting only the distinct ones).

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

The square root of 2188601856 is about 46782.4951878371. The cubic root of 2188601856 is about 1298.3414462407.

The spelling of 2188601856 in words is "two billion, one hundred eighty-eight million, six hundred one thousand, eight hundred fifty-six".