1822421186772 has 24 divisors (see below), whose sum is σ = 4300094937600. Its totient is φ = 600648181056.

The previous prime is 1822421186771. The next prime is 1822421186809. The reversal of 1822421186772 is 2776811242281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822421186771) by changing a digit.

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, 853192372 + ... + 853194507.

It is an arithmetic number, because the mean of its divisors is an integer number (179170622400).

Almost surely, 2^{1822421186772} is an apocalyptic number.

1822421186772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1822421186772 is an abundant number, since it is smaller than the sum of its proper divisors (2477673750828).

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

1822421186772 is a wasteful number, since it uses less digits than its factorization.

1822421186772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706386975 (or 1706386973 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 51.

The spelling of 1822421186772 in words is "one trillion, eight hundred twenty-two billion, four hundred twenty-one million, one hundred eighty-six thousand, seven hundred seventy-two".