1998244930500 has 1440 divisors, whose sum is σ = 8147745365760. Its totient is φ = 417453004800.

The previous prime is 1998244930499. The next prime is 1998244930501. The reversal of 1998244930500 is 50394428991.

1998244930500 is a `hidden beast` number, since 1 + 9 + 9 + 8 + 2 + 44 + 93 + 0 + 500 = 666.

It is an interprime number because it is at equal distance from previous prime (1998244930499) and next prime (1998244930501).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998244930501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 8576158384 + ... + 8576158616.

It is an arithmetic number, because the mean of its divisors is an integer number (5658156504).

Almost surely, 2^{1998244930500} is an apocalyptic number.

1998244930500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1998244930500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4073872682880).

1998244930500 is an abundant number, since it is smaller than the sum of its proper divisors (6149500435260).

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

1998244930500 is a wasteful number, since it uses less digits than its factorization.

1998244930500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 1998244930500 in words is "one trillion, nine hundred ninety-eight billion, two hundred forty-four million, nine hundred thirty thousand, five hundred".