1808621430800 has 60 divisors (see below), whose sum is σ = 4485381179136. Its totient is φ = 700111516800.

The previous prime is 1808621430797. The next prime is 1808621430881. The reversal of 1808621430800 is 80341268081.

It is a super-2 number, since 2×1808621430800² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72915884 + ... + 72940683.

Almost surely, 2^{1808621430800} is an apocalyptic number.

1808621430800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1808621430800 is an abundant number, since it is smaller than the sum of its proper divisors (2676759748336).

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

1808621430800 is a wasteful number, since it uses less digits than its factorization.

1808621430800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145856616 (or 145856605 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

Adding to 1808621430800 its reverse (80341268081), we get a palindrome (1888962698881).

The spelling of 1808621430800 in words is "one trillion, eight hundred eight billion, six hundred twenty-one million, four hundred thirty thousand, eight hundred".