1988627829792 has 96 divisors (see below), whose sum is σ = 5404071665664. Its totient is φ = 639643833600.

The previous prime is 1988627829779. The next prime is 1988627829821. The reversal of 1988627829792 is 2979287268891.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69817 + ... + 1995527.

It is an arithmetic number, because the mean of its divisors is an integer number (56292413184).

Almost surely, 2^{1988627829792} is an apocalyptic number.

1988627829792 is a gapful number since it is divisible by the number (12) 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 1988627829792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2702035832832).

1988627829792 is an abundant number, since it is smaller than the sum of its proper divisors (3415443835872).

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

1988627829792 is a wasteful number, since it uses less digits than its factorization.

1988627829792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926102 (or 1926094 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 78.

The spelling of 1988627829792 in words is "one trillion, nine hundred eighty-eight billion, six hundred twenty-seven million, eight hundred twenty-nine thousand, seven hundred ninety-two".