18485165359 has 2 divisors, whose sum is σ = 18485165360. Its totient is φ = 18485165358.

The previous prime is 18485165323. The next prime is 18485165411. The reversal of 18485165359 is 95356158481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18485165359 - 2²¹ = 18483068207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18485165059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9242582679 + 9242582680.

It is an arithmetic number, because the mean of its divisors is an integer number (9242582680).

Almost surely, 2^18485165359 is an apocalyptic number.

18485165359 is a deficient number, since it is larger than the sum of its proper divisors (1).

18485165359 is an equidigital number, since it uses as much as digits as its factorization.

18485165359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184000, while the sum is 55.

The spelling of 18485165359 in words is "eighteen billion, four hundred eighty-five million, one hundred sixty-five thousand, three hundred fifty-nine".