1145440000 has 90 divisors (see below), whose sum is σ = 2857491560. Its totient is φ = 458112000.

The previous prime is 1145439989. The next prime is 1145440013. The reversal of 1145440000 is 445411.

It is a self number, because there is not a number n which added to its sum of digits gives 1145440000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 156421 + ... + 163579.

Almost surely, 2^1145440000 is an apocalyptic number.

1145440000 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 1145440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428745780).

1145440000 is an abundant number, since it is smaller than the sum of its proper divisors (1712051560).

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

1145440000 is an frugal number, since it uses more digits than its factorization.

1145440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7195 (or 7166 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1145440000 is about 33844.3496022600. The cubic root of 1145440000 is about 1046.3029465423.

Adding to 1145440000 its reverse (445411), we get a palindrome (1145885411).

The spelling of 1145440000 in words is "one billion, one hundred forty-five million, four hundred forty thousand".