1808628960020 has 24 divisors (see below), whose sum is σ = 3963256504704. Its totient is φ = 691997167136.

The previous prime is 1808628959981. The next prime is 1808628960023. The reversal of 1808628960020 is 200698268081.

It is a super-2 number, since 2×1808628960020² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808628960023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1965900584 + ... + 1965901503.

It is an arithmetic number, because the mean of its divisors is an integer number (165135687696).

Almost surely, 2^{1808628960020} is an apocalyptic number.

1808628960020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1808628960020 is an abundant number, since it is smaller than the sum of its proper divisors (2154627544684).

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

1808628960020 is a wasteful number, since it uses less digits than its factorization.

1808628960020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931802119 (or 3931802117 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 1808628960020 in words is "one trillion, eight hundred eight billion, six hundred twenty-eight million, nine hundred sixty thousand, twenty".