18855063 has 6 divisors (see below), whose sum is σ = 27235104. Its totient is φ = 12570036.

The previous prime is 18855061. The next prime is 18855071. The reversal of 18855063 is 36055881.

It is not a de Polignac number, because 18855063 - 2¹ = 18855061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18855061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1047495 + ... + 1047512.

It is an arithmetic number, because the mean of its divisors is an integer number (4539184).

Almost surely, 2^18855063 is an apocalyptic number.

18855063 is a deficient number, since it is larger than the sum of its proper divisors (8380041).

18855063 is a wasteful number, since it uses less digits than its factorization.

18855063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095013 (or 2095010 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 18855063 is about 4342.2417021626. The cubic root of 18855063 is about 266.1599232419.

The spelling of 18855063 in words is "eighteen million, eight hundred fifty-five thousand, sixty-three".