18368475 has 24 divisors (see below), whose sum is σ = 30948912. Its totient is φ = 9609600.

The previous prime is 18368473. The next prime is 18368491. The reversal of 18368475 is 57486381.

It is not a de Polignac number, because 18368475 - 2¹ = 18368473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18368473) 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 23 ways as a sum of consecutive naturals, for example, 1665 + ... + 6285.

It is an arithmetic number, because the mean of its divisors is an integer number (1289538).

Almost surely, 2^18368475 is an apocalyptic number.

18368475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18368475 is a deficient number, since it is larger than the sum of its proper divisors (12580437).

18368475 is a wasteful number, since it uses less digits than its factorization.

18368475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687 (or 4682 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 18368475 is about 4285.8458908365. The cubic root of 18368475 is about 263.8503657319.

The spelling of 18368475 in words is "eighteen million, three hundred sixty-eight thousand, four hundred seventy-five".