18475636 has 12 divisors (see below), whose sum is σ = 32366628. Its totient is φ = 9228032.

The previous prime is 18475631. The next prime is 18475637. The reversal of 18475636 is 63657481.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4368100 + 14107536 = 2090^2 + 3756^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18475631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3300 + ... + 6916.

It is an arithmetic number, because the mean of its divisors is an integer number (2697219).

Almost surely, 2^18475636 is an apocalyptic number.

It is an amenable number.

18475636 is a deficient number, since it is larger than the sum of its proper divisors (13890992).

18475636 is a wasteful number, since it uses less digits than its factorization.

18475636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898 (or 4896 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 18475636 is about 4298.3294429348. The cubic root of 18475636 is about 264.3624688958.

The spelling of 18475636 in words is "eighteen million, four hundred seventy-five thousand, six hundred thirty-six".