1854321294689 has 16 divisors (see below), whose sum is σ = 1998053522640. Its totient is φ = 1714510325760.

The previous prime is 1854321294673. The next prime is 1854321294827. The reversal of 1854321294689 is 9864921234581.

It can be written as a sum of positive squares in 8 ways, for example, as 74477139025 + 1779844155664 = 272905^2 + 1334108^2 .

It is a cyclic number.

It is not a de Polignac number, because 1854321294689 - 2⁴ = 1854321294673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1854321294659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266234 + ... + 1944099.

It is an arithmetic number, because the mean of its divisors is an integer number (124878345165).

Almost surely, 2^{1854321294689} is an apocalyptic number.

It is an amenable number.

1854321294689 is a deficient number, since it is larger than the sum of its proper divisors (143732227951).

1854321294689 is a wasteful number, since it uses less digits than its factorization.

1854321294689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211220.

The product of its digits is 29859840, while the sum is 62.

The spelling of 1854321294689 in words is "one trillion, eight hundred fifty-four billion, three hundred twenty-one million, two hundred ninety-four thousand, six hundred eighty-nine".