18456135 has 32 divisors (see below), whose sum is σ = 31534272. Its totient is φ = 9185280.

The previous prime is 18456121. The next prime is 18456157. The reversal of 18456135 is 53165481.

It is not a de Polignac number, because 18456135 - 2⁵ = 18456103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18456096 and 18456105.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 39805 + ... + 40265.

It is an arithmetic number, because the mean of its divisors is an integer number (985446).

Almost surely, 2^18456135 is an apocalyptic number.

18456135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18456135 is a deficient number, since it is larger than the sum of its proper divisors (13078137).

18456135 is a wasteful number, since it uses less digits than its factorization.

18456135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its digits is 14400, while the sum is 33.

The square root of 18456135 is about 4296.0604046033. The cubic root of 18456135 is about 264.2694247847.

The spelling of 18456135 in words is "eighteen million, four hundred fifty-six thousand, one hundred thirty-five".