1998794528 has 24 divisors (see below), whose sum is σ = 4142239920. Its totient is φ = 946797120.

The previous prime is 1998794527. The next prime is 1998794591. The reversal of 1998794528 is 8254978991.

It is not an unprimeable number, because it can be changed into a prime (1998794527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643138 + ... + 1644353.

It is an arithmetic number, because the mean of its divisors is an integer number (172593330).

Almost surely, 2^1998794528 is an apocalyptic number.

It is an amenable number.

1998794528 is an abundant number, since it is smaller than the sum of its proper divisors (2143445392).

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

1998794528 is a wasteful number, since it uses less digits than its factorization.

1998794528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287520 (or 3287512 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 62.

The square root of 1998794528 is about 44707.8799318420. The cubic root of 1998794528 is about 1259.6678657624.

The spelling of 1998794528 in words is "one billion, nine hundred ninety-eight million, seven hundred ninety-four thousand, five hundred twenty-eight".