1808327619228 has 48 divisors (see below), whose sum is σ = 4553257516416. Its totient is φ = 555275259840.

The previous prime is 1808327619223. The next prime is 1808327619271. The reversal of 1808327619228 is 8229167238081.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808327619223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11727726 + ... + 11880917.

It is an arithmetic number, because the mean of its divisors is an integer number (94859531592).

Almost surely, 2^{1808327619228} is an apocalyptic number.

It is an amenable number.

1808327619228 is an abundant number, since it is smaller than the sum of its proper divisors (2744929897188).

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

1808327619228 is a wasteful number, since it uses less digits than its factorization.

1808327619228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23609154 (or 23609152 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 1808327619228 in words is "one trillion, eight hundred eight billion, three hundred twenty-seven million, six hundred nineteen thousand, two hundred twenty-eight".