1854042762917 has 2 divisors, whose sum is σ = 1854042762918. Its totient is φ = 1854042762916.

The previous prime is 1854042762863. The next prime is 1854042762947. The reversal of 1854042762917 is 7192672404581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1720415229316 + 133627533601 = 1311646^2 + 365551^2 .

It is a cyclic number.

It is not a de Polignac number, because 1854042762917 - 2¹⁸ = 1854042500773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1854042762947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927021381458 + 927021381459.

It is an arithmetic number, because the mean of its divisors is an integer number (927021381459).

Almost surely, 2^{1854042762917} is an apocalyptic number.

It is an amenable number.

1854042762917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1854042762917 is an equidigital number, since it uses as much as digits as its factorization.

1854042762917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 1854042762917 in words is "one trillion, eight hundred fifty-four billion, forty-two million, seven hundred sixty-two thousand, nine hundred seventeen".