18357067709 has 2 divisors, whose sum is σ = 18357067710. Its totient is φ = 18357067708.

The previous prime is 18357067639. The next prime is 18357067793. The reversal of 18357067709 is 90776075381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14572111225 + 3784956484 = 120715^2 + 61522^2 .

It is a cyclic number.

It is not a de Polignac number, because 18357067709 - 2¹⁶ = 18357002173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18357067609) 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, 9178533854 + 9178533855.

It is an arithmetic number, because the mean of its divisors is an integer number (9178533855).

Almost surely, 2^18357067709 is an apocalyptic number.

It is an amenable number.

18357067709 is a deficient number, since it is larger than the sum of its proper divisors (1).

18357067709 is an equidigital number, since it uses as much as digits as its factorization.

18357067709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 18357067709 in words is "eighteen billion, three hundred fifty-seven million, sixty-seven thousand, seven hundred nine".