1988000568 has 96 divisors (see below), whose sum is σ = 5496996960. Its totient is φ = 648910080.

The previous prime is 1988000557. The next prime is 1988000593. The reversal of 1988000568 is 8650008891.

1988000568 is a `hidden beast` number, since 1 + 9 + 8 + 80 + 0 + 0 + 568 = 666.

It is a Cunningham number, because it is equal to 44587²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 801346 + ... + 803822.

It is an arithmetic number, because the mean of its divisors is an integer number (57260385).

Almost surely, 2^1988000568 is an apocalyptic number.

1988000568 is a gapful number since it is divisible by the number (18) 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 1988000568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2748498480).

1988000568 is an abundant number, since it is smaller than the sum of its proper divisors (3508996392).

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

1988000568 is a wasteful number, since it uses less digits than its factorization.

1988000568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2710 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 1988000568 is about 44586.9999887860. Note that the first 4 decimals coincide. The cubic root of 1988000568 is about 1257.3962709964.

The spelling of 1988000568 in words is "one billion, nine hundred eighty-eight million, five hundred sixty-eight", and thus it is an aban number.