1988888888 has 32 divisors (see below), whose sum is σ = 4512607200. Its totient is φ = 802240512.

The previous prime is 1988888857. The next prime is 1988888899. The reversal of 1988888888 is 8888888891.

1988888888 is a modest number, since divided by 88888 gives 19888 as remainder.

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 7 ways as a sum of consecutive naturals, for example, 1043633 + ... + 1045536.

It is an arithmetic number, because the mean of its divisors is an integer number (141018975).

Almost surely, 2^1988888888 is an apocalyptic number.

It is an amenable number.

1988888888 is an abundant number, since it is smaller than the sum of its proper divisors (2523718312).

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

1988888888 is a wasteful number, since it uses less digits than its factorization.

1988888888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089199 (or 2089195 counting only the distinct ones).

The product of its digits is 150994944, while the sum is 74.

The square root of 1988888888 is about 44596.9605242330. The cubic root of 1988888888 is about 1257.5835284760.

It can be divided in two parts, 1 and 988888888, that added together give a palindrome (988888889).

The spelling of 1988888888 in words is "one billion, nine hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-eight".