1980169884 has 144 divisors (see below), whose sum is σ = 6255325440. Its totient is φ = 513112320.

The previous prime is 1980169853. The next prime is 1980169901. The reversal of 1980169884 is 4889610891.

1980169884 is a modest number, since divided by 169884 gives 1980 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1980169884.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2242107 + ... + 2242989.

It is an arithmetic number, because the mean of its divisors is an integer number (43439760).

Almost surely, 2^1980169884 is an apocalyptic number.

1980169884 is a gapful number since it is divisible by the number (14) 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 1980169884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3127662720).

1980169884 is an abundant number, since it is smaller than the sum of its proper divisors (4275155556).

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

1980169884 is a wasteful number, since it uses less digits than its factorization.

1980169884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1715 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The square root of 1980169884 is about 44499.0998111198. The cubic root of 1980169884 is about 1255.7431478438.

The spelling of 1980169884 in words is "one billion, nine hundred eighty million, one hundred sixty-nine thousand, eight hundred eighty-four".