1998599344 has 20 divisors (see below), whose sum is σ = 4425470224. Its totient is φ = 856542528.

The previous prime is 1998599333. The next prime is 1998599389. The reversal of 1998599344 is 4439958991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8922207 + ... + 8922430.

Almost surely, 2^1998599344 is an apocalyptic number.

1998599344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1998599344 is an abundant number, since it is smaller than the sum of its proper divisors (2426870880).

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

1998599344 is a wasteful number, since it uses less digits than its factorization.

1998599344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17844652 (or 17844646 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 61.

The square root of 1998599344 is about 44705.6969971390. The cubic root of 1998599344 is about 1259.6268618785.

The spelling of 1998599344 in words is "one billion, nine hundred ninety-eight million, five hundred ninety-nine thousand, three hundred forty-four".