18449585 has 32 divisors (see below), whose sum is σ = 27862272. Its totient is φ = 11393280.

The previous prime is 18449579. The next prime is 18449591. The reversal of 18449585 is 58594481.

It is an interprime number because it is at equal distance from previous prime (18449579) and next prime (18449591).

It is not a de Polignac number, because 18449585 - 2¹² = 18445489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66467 + ... + 66743.

It is an arithmetic number, because the mean of its divisors is an integer number (870696).

Almost surely, 2^18449585 is an apocalyptic number.

It is an amenable number.

18449585 is a deficient number, since it is larger than the sum of its proper divisors (9412687).

18449585 is a wasteful number, since it uses less digits than its factorization.

18449585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473.

The product of its digits is 230400, while the sum is 44.

The square root of 18449585 is about 4295.2980106158. The cubic root of 18449585 is about 264.2381584056.

Subtracting 18449585 from its reverse (58594481), we obtain a square (40144896 = 6336²).

The spelling of 18449585 in words is "eighteen million, four hundred forty-nine thousand, five hundred eighty-five".