1988865060 has 192 divisors, whose sum is σ = 6876721152. Its totient is φ = 418235904.

The previous prime is 1988865059. The next prime is 1988865077. The reversal of 1988865060 is 605688891.

It is a junction number, because it is equal to n+sod(n) for n = 1988864994 and 1988865012.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3073657 + ... + 3074303.

It is an arithmetic number, because the mean of its divisors is an integer number (35816256).

Almost surely, 2^1988865060 is an apocalyptic number.

1988865060 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 1988865060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3438360576).

1988865060 is an abundant number, since it is smaller than the sum of its proper divisors (4887856092).

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

1988865060 is a wasteful number, since it uses less digits than its factorization.

1988865060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The square root of 1988865060 is about 44596.6933751820. The cubic root of 1988865060 is about 1257.5785062716.

It can be divided in two parts, 19888 and 65060, that added together give a palindrome (84948).

The spelling of 1988865060 in words is "one billion, nine hundred eighty-eight million, eight hundred sixty-five thousand, sixty".