1821833273616 has 40 divisors (see below), whose sum is σ = 4710207467904. Its totient is φ = 606786810240.

The previous prime is 1821833273581. The next prime is 1821833273647. The reversal of 1821833273616 is 6163723381281.

It is a super-2 number, since 2×1821833273616² (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 7 ways as a sum of consecutive naturals, for example, 15282120 + ... + 15400871.

Almost surely, 2^{1821833273616} is an apocalyptic number.

1821833273616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1821833273616 is an abundant number, since it is smaller than the sum of its proper divisors (2888374194288).

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

1821833273616 is a wasteful number, since it uses less digits than its factorization.

1821833273616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30684239 (or 30684233 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The spelling of 1821833273616 in words is "one trillion, eight hundred twenty-one billion, eight hundred thirty-three million, two hundred seventy-three thousand, six hundred sixteen".