1113543200 has 144 divisors (see below), whose sum is σ = 3389408064. Its totient is φ = 347059200.

The previous prime is 1113543181. The next prime is 1113543209. The reversal of 1113543200 is 23453111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1113543209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52562 + ... + 70638.

It is an arithmetic number, because the mean of its divisors is an integer number (23537556).

Almost surely, 2^1113543200 is an apocalyptic number.

1113543200 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 1113543200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1694704032).

1113543200 is an abundant number, since it is smaller than the sum of its proper divisors (2275864864).

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

1113543200 is a wasteful number, since it uses less digits than its factorization.

1113543200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18115 (or 18102 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1113543200 is about 33369.7947251702. The cubic root of 1113543200 is about 1036.4993245024.

Adding to 1113543200 its reverse (23453111), we get a palindrome (1136996311).

The spelling of 1113543200 in words is "one billion, one hundred thirteen million, five hundred forty-three thousand, two hundred".