18315353279 has 2 divisors, whose sum is σ = 18315353280. Its totient is φ = 18315353278.

The previous prime is 18315353269. The next prime is 18315353321. The reversal of 18315353279 is 97235351381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18315353279 - 2⁴ = 18315353263 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18315353219) 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 as a sum of consecutive naturals, namely, 9157676639 + 9157676640.

It is an arithmetic number, because the mean of its divisors is an integer number (9157676640).

Almost surely, 2^18315353279 is an apocalyptic number.

18315353279 is a deficient number, since it is larger than the sum of its proper divisors (1).

18315353279 is an equidigital number, since it uses as much as digits as its factorization.

18315353279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 47.

The spelling of 18315353279 in words is "eighteen billion, three hundred fifteen million, three hundred fifty-three thousand, two hundred seventy-nine".