1982278437822 has 48 divisors (see below), whose sum is σ = 4395021911280. Its totient is φ = 645363161856.

The previous prime is 1982278437803. The next prime is 1982278437829. The reversal of 1982278437822 is 2287348722891.

1982278437822 is a `hidden beast` number, since 1 + 98 + 22 + 78 + 437 + 8 + 22 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1982278437822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982278437829) 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 23 ways as a sum of consecutive naturals, for example, 22027254 + ... + 22117062.

It is an arithmetic number, because the mean of its divisors is an integer number (91562956485).

Almost surely, 2^{1982278437822} is an apocalyptic number.

1982278437822 is an abundant number, since it is smaller than the sum of its proper divisors (2412743473458).

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

1982278437822 is a wasteful number, since it uses less digits than its factorization.

1982278437822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118377 (or 118374 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The spelling of 1982278437822 in words is "one trillion, nine hundred eighty-two billion, two hundred seventy-eight million, four hundred thirty-seven thousand, eight hundred twenty-two".