1019800000 has 84 divisors (see below), whose sum is σ = 2529916200. Its totient is φ = 407840000.

The previous prime is 1019799973. The next prime is 1019800007. The reversal of 1019800000 is 89101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019800007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197451 + ... + 202549.

It is an arithmetic number, because the mean of its divisors is an integer number (30118050).

Almost surely, 2^1019800000 is an apocalyptic number.

1019800000 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 1019800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264958100).

1019800000 is an abundant number, since it is smaller than the sum of its proper divisors (1510116200).

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

1019800000 is an frugal number, since it uses more digits than its factorization.

1019800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136 (or 5106 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1019800000 is about 31934.3075703858. The cubic root of 1019800000 is about 1006.5569129255.

Adding to 1019800000 its reverse (89101), we get a palindrome (1019889101).

The spelling of 1019800000 in words is "one billion, nineteen million, eight hundred thousand".