1998568572 has 192 divisors, whose sum is σ = 6292070400. Its totient is φ = 476824320.

The previous prime is 1998568571. The next prime is 1998568633. The reversal of 1998568572 is 2758658991.

It is a super-2 number, since 2×1998568572² = 7988552673972238368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998568571) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4552329 + ... + 4552767.

It is an arithmetic number, because the mean of its divisors is an integer number (32771200).

Almost surely, 2^1998568572 is an apocalyptic number.

1998568572 is a gapful number since it is divisible by the number (12) 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 1998568572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3146035200).

1998568572 is an abundant number, since it is smaller than the sum of its proper divisors (4293501828).

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

1998568572 is a wasteful number, since it uses less digits than its factorization.

1998568572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 854 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 60.

The square root of 1998568572 is about 44705.3528338610. The cubic root of 1998568572 is about 1259.6203971116.

The spelling of 1998568572 in words is "one billion, nine hundred ninety-eight million, five hundred sixty-eight thousand, five hundred seventy-two".