1980448872 has 16 divisors (see below), whose sum is σ = 4951122240. Its totient is φ = 660149616.

The previous prime is 1980448853. The next prime is 1980448909. The reversal of 1980448872 is 2788440891.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41259328 + ... + 41259375.

It is an arithmetic number, because the mean of its divisors is an integer number (309445140).

Almost surely, 2^1980448872 is an apocalyptic number.

1980448872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1980448872 is an abundant number, since it is smaller than the sum of its proper divisors (2970673368).

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

1980448872 is a wasteful number, since it uses less digits than its factorization.

1980448872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82518712 (or 82518708 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 51.

The square root of 1980448872 is about 44502.2344607549. The cubic root of 1980448872 is about 1255.8021193526.

The spelling of 1980448872 in words is "one billion, nine hundred eighty million, four hundred forty-eight thousand, eight hundred seventy-two".