1998440848 has 20 divisors (see below), whose sum is σ = 4099743180. Its totient is φ = 940442624.

The previous prime is 1998440833. The next prime is 1998440869. The reversal of 1998440848 is 8480448991.

It can be written as a sum of positive squares in 2 ways, for example, as 1157904784 + 840536064 = 34028^2 + 28992^2 .

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, 3673333 + ... + 3673876.

It is an arithmetic number, because the mean of its divisors is an integer number (204987159).

Almost surely, 2^1998440848 is an apocalyptic number.

It is an amenable number.

1998440848 is an abundant number, since it is smaller than the sum of its proper divisors (2101302332).

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

1998440848 is a wasteful number, since it uses less digits than its factorization.

1998440848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7347234 (or 7347228 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The square root of 1998440848 is about 44703.9243020118. The cubic root of 1998440848 is about 1259.5935633758.

The spelling of 1998440848 in words is "one billion, nine hundred ninety-eight million, four hundred forty thousand, eight hundred forty-eight".