1678674877389 has 8 divisors (see below), whose sum is σ = 2486925744320. Its totient is φ = 1119116584908.

The previous prime is 1678674877361. The next prime is 1678674877393. The reversal of 1678674877389 is 9837784768761.

1678674877389 is a `hidden beast` number, since 1 + 6 + 7 + 8 + 67 + 487 + 73 + 8 + 9 = 666.

It is not a de Polignac number, because 1678674877389 - 2⁷ = 1678674877261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678674877489) 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, 31086571777 + ... + 31086571830.

It is an arithmetic number, because the mean of its divisors is an integer number (310865718040).

Almost surely, 2^{1678674877389} is an apocalyptic number.

It is an amenable number.

1678674877389 is a deficient number, since it is larger than the sum of its proper divisors (808250866931).

1678674877389 is an equidigital number, since it uses as much as digits as its factorization.

1678674877389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62173143616 (or 62173143610 counting only the distinct ones).

The product of its digits is 4779565056, while the sum is 81.

The spelling of 1678674877389 in words is "one trillion, six hundred seventy-eight billion, six hundred seventy-four million, eight hundred seventy-seven thousand, three hundred eighty-nine".