1866683280912 has 40 divisors (see below), whose sum is σ = 4828686360960. Its totient is φ = 621399216000.

The previous prime is 1866683280907. The next prime is 1866683280919. The reversal of 1866683280912 is 2190823866681.

It is not an unprimeable number, because it can be changed into a prime (1866683280919) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25855587 + ... + 25927682.

It is an arithmetic number, because the mean of its divisors is an integer number (120717159024).

Almost surely, 2^{1866683280912} is an apocalyptic number.

1866683280912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1866683280912 is an abundant number, since it is smaller than the sum of its proper divisors (2962003080048).

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

1866683280912 is a wasteful number, since it uses less digits than its factorization.

1866683280912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51784031 (or 51784025 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 1866683280912 in words is "one trillion, eight hundred sixty-six billion, six hundred eighty-three million, two hundred eighty thousand, nine hundred twelve".