1821829184912 has 20 divisors (see below), whose sum is σ = 3850684413936. Its totient is φ = 828104174880.

The previous prime is 1821829184891. The next prime is 1821829184939. The reversal of 1821829184912 is 2194819281281.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5175650918 + ... + 5175651269.

Almost surely, 2^{1821829184912} is an apocalyptic number.

It is an amenable number.

1821829184912 is an abundant number, since it is smaller than the sum of its proper divisors (2028855229024).

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

1821829184912 is a wasteful number, since it uses less digits than its factorization.

1821829184912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10351302206 (or 10351302200 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 56.

The spelling of 1821829184912 in words is "one trillion, eight hundred twenty-one billion, eight hundred twenty-nine million, one hundred eighty-four thousand, nine hundred twelve".