1982975342728 has 16 divisors (see below), whose sum is σ = 3718121509260. Its totient is φ = 991476273600.

The previous prime is 1982975342653. The next prime is 1982975342729. The reversal of 1982975342728 is 8272435792891.

It can be written as a sum of positive squares in 2 ways, for example, as 1671792108484 + 311183234244 = 1292978^2 + 557838^2 .

It is not an unprimeable number, because it can be changed into a prime (1982975342729) 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 3 ways as a sum of consecutive naturals, for example, 661243 + ... + 2098378.

Almost surely, 2^{1982975342728} is an apocalyptic number.

It is an amenable number.

1982975342728 is a deficient number, since it is larger than the sum of its proper divisors (1735146166532).

1982975342728 is a wasteful number, since it uses less digits than its factorization.

1982975342728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849448 (or 2849444 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 67.

The spelling of 1982975342728 in words is "one trillion, nine hundred eighty-two billion, nine hundred seventy-five million, three hundred forty-two thousand, seven hundred twenty-eight".