1998710444 has 6 divisors (see below), whose sum is σ = 3497743284. Its totient is φ = 999355220.

The previous prime is 1998710431. The next prime is 1998710449. The reversal of 1998710444 is 4440178991.

It is not an unprimeable number, because it can be changed into a prime (1998710449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249838802 + ... + 249838809.

It is an arithmetic number, because the mean of its divisors is an integer number (582957214).

Almost surely, 2^1998710444 is an apocalyptic number.

It is an amenable number.

1998710444 is a deficient number, since it is larger than the sum of its proper divisors (1499032840).

1998710444 is a wasteful number, since it uses less digits than its factorization.

1998710444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499677615 (or 499677613 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 1998710444 is about 44706.9395508125. The cubic root of 1998710444 is about 1259.6502018827.

The spelling of 1998710444 in words is "one billion, nine hundred ninety-eight million, seven hundred ten thousand, four hundred forty-four".