1218280727982 has 64 divisors (see below), whose sum is σ = 2567521566720. Its totient is φ = 384863013600.

The previous prime is 1218280727971. The next prime is 1218280727987. The reversal of 1218280727982 is 2897270828121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218280727987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2675107 + ... + 3097217.

It is an arithmetic number, because the mean of its divisors is an integer number (40117524480).

Almost surely, 2^{1218280727982} is an apocalyptic number.

1218280727982 is an abundant number, since it is smaller than the sum of its proper divisors (1349240838738).

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

1218280727982 is a wasteful number, since it uses less digits than its factorization.

1218280727982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422469.

The product of its (nonzero) digits is 3612672, while the sum is 57.

The spelling of 1218280727982 in words is "one trillion, two hundred eighteen billion, two hundred eighty million, seven hundred twenty-seven thousand, nine hundred eighty-two".