1866833366867 has 8 divisors (see below), whose sum is σ = 2133561590016. Its totient is φ = 1600114579272.

The previous prime is 1866833366833. The next prime is 1866833366887. The reversal of 1866833366867 is 7686633386681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1866833366867 - 2¹⁶ = 1866833301331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1866833366867.

It is not an unprimeable number, because it can be changed into a prime (1866833366887) 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, 1929713 + ... + 2730834.

It is an arithmetic number, because the mean of its divisors is an integer number (266695198752).

Almost surely, 2^{1866833366867} is an apocalyptic number.

1866833366867 is a deficient number, since it is larger than the sum of its proper divisors (266728223149).

1866833366867 is an equidigital number, since it uses as much as digits as its factorization.

1866833366867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717777.

The product of its digits is 752467968, while the sum is 71.

The spelling of 1866833366867 in words is "one trillion, eight hundred sixty-six billion, eight hundred thirty-three million, three hundred sixty-six thousand, eight hundred sixty-seven".