18160645585 has 8 divisors (see below), whose sum is σ = 22299583680. Its totient is φ = 14190643824.

The previous prime is 18160645549. The next prime is 18160645589. The reversal of 18160645585 is 58554606181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18160645585 - 2¹³ = 18160637393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18160645589) 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 in 7 ways as a sum of consecutive naturals, for example, 42233845 + ... + 42234274.

It is an arithmetic number, because the mean of its divisors is an integer number (2787447960).

Almost surely, 2^18160645585 is an apocalyptic number.

It is an amenable number.

18160645585 is a deficient number, since it is larger than the sum of its proper divisors (4138938095).

18160645585 is an equidigital number, since it uses as much as digits as its factorization.

18160645585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84468167.

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 18160645585 in words is "eighteen billion, one hundred sixty million, six hundred forty-five thousand, five hundred eighty-five".