1668109036933 has 4 divisors (see below), whose sum is σ = 1668113233920. Its totient is φ = 1668104839948.

The previous prime is 1668109036883. The next prime is 1668109036961. The reversal of 1668109036933 is 3396309018661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1668109036933 - 2⁹ = 1668109036421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668109036733) 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, 1431685 + ... + 2320762.

It is an arithmetic number, because the mean of its divisors is an integer number (417028308480).

Almost surely, 2^{1668109036933} is an apocalyptic number.

It is an amenable number.

1668109036933 is a deficient number, since it is larger than the sum of its proper divisors (4196987).

1668109036933 is an equidigital number, since it uses as much as digits as its factorization.

1668109036933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196986.

The product of its (nonzero) digits is 3779136, while the sum is 55.

The spelling of 1668109036933 in words is "one trillion, six hundred sixty-eight billion, one hundred nine million, thirty-six thousand, nine hundred thirty-three".