1998529536 has 44 divisors (see below), whose sum is σ = 5326818032. Its totient is φ = 666175488.

The previous prime is 1998529529. The next prime is 1998529549. The reversal of 1998529536 is 6359258991.

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, 322210 + ... + 328353.

Almost surely, 2^1998529536 is an apocalyptic number.

1998529536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1998529536 is an abundant number, since it is smaller than the sum of its proper divisors (3328288496).

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

1998529536 is an equidigital number, since it uses as much as digits as its factorization.

1998529536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650586 (or 650568 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 57.

The square root of 1998529536 is about 44704.9162397157. The cubic root of 1998529536 is about 1259.6121960983.

The spelling of 1998529536 in words is "one billion, nine hundred ninety-eight million, five hundred twenty-nine thousand, five hundred thirty-six".