1988882500 has 120 divisors (see below), whose sum is σ = 4899831552. Its totient is φ = 699600000.

The previous prime is 1988882477. The next prime is 1988882521. The reversal of 1988882500 is 52888891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 851334 + ... + 853666.

Almost surely, 2^1988882500 is an apocalyptic number.

1988882500 is a gapful number since it is divisible by the number (10) 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 1988882500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2449915776).

1988882500 is an abundant number, since it is smaller than the sum of its proper divisors (2910949052).

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

1988882500 is a wasteful number, since it uses less digits than its factorization.

1988882500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399 (or 2382 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 49.

The square root of 1988882500 is about 44596.8889049449. Note that the first 3 decimals coincide. The cubic root of 1988882500 is about 1257.5821820874.

It can be divided in two parts, 1988 and 882500, that added together give a palindrome (884488).

The spelling of 1988882500 in words is "one billion, nine hundred eighty-eight million, eight hundred eighty-two thousand, five hundred".