18503234258 has 16 divisors (see below), whose sum is σ = 28980611136. Its totient is φ = 8843559120.

The previous prime is 18503234257. The next prime is 18503234263. The reversal of 18503234258 is 85243230581.

It is not an unprimeable number, because it can be changed into a prime (18503234251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60941 + ... + 201792.

It is an arithmetic number, because the mean of its divisors is an integer number (1811288196).

Almost surely, 2^18503234258 is an apocalyptic number.

18503234258 is a deficient number, since it is larger than the sum of its proper divisors (10477376878).

18503234258 is a wasteful number, since it uses less digits than its factorization.

18503234258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264289.

The product of its (nonzero) digits is 230400, while the sum is 41.

It can be divided in two parts, 1850323 and 4258, that added together give a palindrome (1854581).

The spelling of 18503234258 in words is "eighteen billion, five hundred three million, two hundred thirty-four thousand, two hundred fifty-eight".