1813224200 has 36 divisors (see below), whose sum is σ = 4217146845. Its totient is φ = 725048800.

The previous prime is 1813224197. The next prime is 1813224209. The reversal of 1813224200 is 24223181.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1776959716 + 36264484 = 42154^2 + 6022^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=30110.

It is not an unprimeable number, because it can be changed into a prime (1813224209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 600695 + ... + 603705.

Almost surely, 2^1813224200 is an apocalyptic number.

1813224200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1813224200 is an abundant number, since it is smaller than the sum of its proper divisors (2403922645).

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

1813224200 is an frugal number, since it uses more digits than its factorization.

1813224200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6038 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1813224200 is about 42581.9703630539. The cubic root of 1813224200 is about 1219.4121058936.

Adding to 1813224200 its reverse (24223181), we get a palindrome (1837447381).

The spelling of 1813224200 in words is "one billion, eight hundred thirteen million, two hundred twenty-four thousand, two hundred".