18063903 has 48 divisors (see below), whose sum is σ = 29514240. Its totient is φ = 9734400.

The previous prime is 18063887. The next prime is 18063907. The reversal of 18063903 is 30936081.

It is not a de Polignac number, because 18063903 - 2⁴ = 18063887 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18063907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228618 + ... + 228696.

It is an arithmetic number, because the mean of its divisors is an integer number (614880).

Almost surely, 2^18063903 is an apocalyptic number.

18063903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18063903 is a deficient number, since it is larger than the sum of its proper divisors (11450337).

18063903 is a wasteful number, since it uses less digits than its factorization.

18063903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 18063903 is about 4250.1650556184. The cubic root of 18063903 is about 262.3839087566.

Adding to 18063903 its reverse (30936081), we get a palindrome (48999984).

The spelling of 18063903 in words is "eighteen million, sixty-three thousand, nine hundred three".