1810450000 has 60 divisors (see below), whose sum is σ = 4384524060. Its totient is φ = 724160000.

The previous prime is 1810449989. The next prime is 1810450007. The reversal of 1810450000 is 540181.

It can be written as a sum of positive squares in 6 ways, for example, as 1698428944 + 112021056 = 41212^2 + 10584^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1810450000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1810450007) 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, 31896 + ... + 68104.

It is an arithmetic number, because the mean of its divisors is an integer number (73075401).

Almost surely, 2^1810450000 is an apocalyptic number.

1810450000 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 1810450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2192262030).

1810450000 is an abundant number, since it is smaller than the sum of its proper divisors (2574074060).

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

1810450000 is an frugal number, since it uses more digits than its factorization.

1810450000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36242 (or 36216 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1810450000 is about 42549.3830742586. The cubic root of 1810450000 is about 1218.7898956916.

Adding to 1810450000 its reverse (540181), we get a palindrome (1810990181).

The spelling of 1810450000 in words is "one billion, eight hundred ten million, four hundred fifty thousand".