1998004498 has 64 divisors (see below), whose sum is σ = 3686400000. Its totient is φ = 810628560.

The previous prime is 1998004447. The next prime is 1998004501. The reversal of 1998004498 is 8944008991.

It is a happy number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998503 + ... + 1000501.

It is an arithmetic number, because the mean of its divisors is an integer number (57600000).

Almost surely, 2^1998004498 is an apocalyptic number.

1998004498 is a deficient number, since it is larger than the sum of its proper divisors (1688395502).

1998004498 is a wasteful number, since it uses less digits than its factorization.

1998004498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 2086 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 1998004498 is about 44699.0435915580. The cubic root of 1998004498 is about 1259.5018812928.

The spelling of 1998004498 in words is "one billion, nine hundred ninety-eight million, four thousand, four hundred ninety-eight".