18618063 has 16 divisors (see below), whose sum is σ = 26459136. Its totient is φ = 11617760.

The previous prime is 18618053. The next prime is 18618071. The reversal of 18618063 is 36081681.

It is not a de Polignac number, because 18618063 - 2²⁴ = 1840847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18618053) 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 15 ways as a sum of consecutive naturals, for example, 373 + ... + 6113.

It is an arithmetic number, because the mean of its divisors is an integer number (1653696).

Almost surely, 2^18618063 is an apocalyptic number.

18618063 is a deficient number, since it is larger than the sum of its proper divisors (7841073).

18618063 is a wasteful number, since it uses less digits than its factorization.

18618063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5814.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18618063 is about 4314.8653513175. The cubic root of 18618063 is about 265.0400461611.

The spelling of 18618063 in words is "eighteen million, six hundred eighteen thousand, sixty-three".