1988441672 has 16 divisors (see below), whose sum is σ = 4260946560. Its totient is φ = 852189264.

The previous prime is 1988441629. The next prime is 1988441681. The reversal of 1988441672 is 2761448891.

It is a self number, because there is not a number n which added to its sum of digits gives 1988441672.

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, 17753888 + ... + 17753999.

It is an arithmetic number, because the mean of its divisors is an integer number (266309160).

Almost surely, 2^1988441672 is an apocalyptic number.

It is an amenable number.

1988441672 is an abundant number, since it is smaller than the sum of its proper divisors (2272504888).

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

1988441672 is a wasteful number, since it uses less digits than its factorization.

1988441672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35507900 (or 35507896 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The square root of 1988441672 is about 44591.9462683566. The cubic root of 1988441672 is about 1257.4892625037.

The spelling of 1988441672 in words is "one billion, nine hundred eighty-eight million, four hundred forty-one thousand, six hundred seventy-two".