1988628960 has 96 divisors (see below), whose sum is σ = 6292121472. Its totient is φ = 527936000.

The previous prime is 1988628883. The next prime is 1988629003. The reversal of 1988628960 is 698268891.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1988628960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99835 + ... + 118085.

It is an arithmetic number, because the mean of its divisors is an integer number (65542932).

Almost surely, 2^1988628960 is an apocalyptic number.

1988628960 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 1988628960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3146060736).

1988628960 is an abundant number, since it is smaller than the sum of its proper divisors (4303492512).

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

1988628960 is a wasteful number, since it uses less digits than its factorization.

1988628960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18496 (or 18488 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 57.

The square root of 1988628960 is about 44594.0462393804. The cubic root of 1988628960 is about 1257.5287415354.

The spelling of 1988628960 in words is "one billion, nine hundred eighty-eight million, six hundred twenty-eight thousand, nine hundred sixty".