2091442229828 has 12 divisors (see below), whose sum is σ = 4182884459712. Its totient is φ = 896332384200.

The previous prime is 2091442229783. The next prime is 2091442229867. The reversal of 2091442229828 is 8289222441902.

2091442229828 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2091442229828.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37347182648 + ... + 37347182703.

It is an arithmetic number, because the mean of its divisors is an integer number (348573704976).

Almost surely, 2^{2091442229828} is an apocalyptic number.

2091442229828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2091442229828 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2091442229828 is a wasteful number, since it uses less digits than its factorization.

2091442229828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74694365362 (or 74694365360 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 2091442229828 in words is "two trillion, ninety-one billion, four hundred forty-two million, two hundred twenty-nine thousand, eight hundred twenty-eight".