18706754317 has 2 divisors, whose sum is σ = 18706754318. Its totient is φ = 18706754316.

The previous prime is 18706754299. The next prime is 18706754327. The reversal of 18706754317 is 71345760781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18597049641 + 109704676 = 136371^2 + 10474^2 .

It is a cyclic number.

It is not a de Polignac number, because 18706754317 - 2⁷ = 18706754189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18706754327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9353377158 + 9353377159.

It is an arithmetic number, because the mean of its divisors is an integer number (9353377159).

Almost surely, 2^18706754317 is an apocalyptic number.

It is an amenable number.

18706754317 is a deficient number, since it is larger than the sum of its proper divisors (1).

18706754317 is an equidigital number, since it uses as much as digits as its factorization.

18706754317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 18706754317 in words is "eighteen billion, seven hundred six million, seven hundred fifty-four thousand, three hundred seventeen".