1980885049920 has 1008 divisors, whose sum is σ = 8208699742080. Its totient is φ = 440510939136.

The previous prime is 1980885049903. The next prime is 1980885049921. The reversal of 1980885049920 is 299405880891.

1980885049920 is a `hidden beast` number, since 1 + 98 + 0 + 8 + 8 + 50 + 499 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1980885049921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 20421495312 + ... + 20421495408.

Almost surely, 2^{1980885049920} is an apocalyptic number.

1980885049920 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 1980885049920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4104349871040).

1980885049920 is an abundant number, since it is smaller than the sum of its proper divisors (6227814692160).

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

1980885049920 is an frugal number, since it uses more digits than its factorization.

1980885049920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 1980885049920 in words is "one trillion, nine hundred eighty billion, eight hundred eighty-five million, forty-nine thousand, nine hundred twenty".