1988988008 has 24 divisors (see below), whose sum is σ = 4338227250. Its totient is φ = 852423264.

The previous prime is 1988987983. The next prime is 1988988041. The reversal of 1988988008 is 8008898891.

It can be written as a sum of positive squares in only one way, i.e., 1088868004 + 900120004 = 32998^2 + 30002^2 .

It is a super-3 number, since 3×1988988008³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2536583 + ... + 2537366.

Almost surely, 2^1988988008 is an apocalyptic number.

It is an amenable number.

1988988008 is an abundant number, since it is smaller than the sum of its proper divisors (2349239242).

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

1988988008 is a wasteful number, since it uses less digits than its factorization.

1988988008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073969 (or 5073958 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 59.

The square root of 1988988008 is about 44598.0717968838. The cubic root of 1988988008 is about 1257.6044194719.

The spelling of 1988988008 in words is "one billion, nine hundred eighty-eight million, nine hundred eighty-eight thousand, eight".