18294145585 has 4 divisors (see below), whose sum is σ = 21952974708. Its totient is φ = 14635316464.

The previous prime is 18294145481. The next prime is 18294145591. The reversal of 18294145585 is 58554149281.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5988902544 + 12305243041 = 77388^2 + 110929^2 .

It is a cyclic number.

It is not a de Polignac number, because 18294145585 - 2⁹ = 18294145073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1829414554 + ... + 1829414563.

It is an arithmetic number, because the mean of its divisors is an integer number (5488243677).

Almost surely, 2^18294145585 is an apocalyptic number.

It is an amenable number.

18294145585 is a deficient number, since it is larger than the sum of its proper divisors (3658829123).

18294145585 is an equidigital number, since it uses as much as digits as its factorization.

18294145585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658829122.

The product of its digits is 2304000, while the sum is 52.

It can be divided in two parts, 1829 and 4145585, that added together give a palindrome (4147414).

The spelling of 18294145585 in words is "eighteen billion, two hundred ninety-four million, one hundred forty-five thousand, five hundred eighty-five".