2018493903 has 16 divisors (see below), whose sum is σ = 2720376576. Its totient is φ = 1331173440.

The previous prime is 2018493901. The next prime is 2018493943. The reversal of 2018493903 is 3093948102.

It is not a de Polignac number, because 2018493903 - 2¹ = 2018493901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018493901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240150 + ... + 248412.

It is an arithmetic number, because the mean of its divisors is an integer number (170023536).

Almost surely, 2^2018493903 is an apocalyptic number.

2018493903 is a deficient number, since it is larger than the sum of its proper divisors (701882673).

2018493903 is a wasteful number, since it uses less digits than its factorization.

2018493903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9134.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 2018493903 is about 44927.6518749867. The cubic root of 2018493903 is about 1263.7926171862.

The spelling of 2018493903 in words is "two billion, eighteen million, four hundred ninety-three thousand, nine hundred three".