18350373503 has 8 divisors (see below), whose sum is σ = 22878387840. Its totient is φ = 14298992280.

The previous prime is 18350373469. The next prime is 18350373571. The reversal of 18350373503 is 30537305381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18350373503 - 2⁶ = 18350373439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18350373593) 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 7 ways as a sum of consecutive naturals, for example, 119158193 + ... + 119158346.

It is an arithmetic number, because the mean of its divisors is an integer number (2859798480).

Almost surely, 2^18350373503 is an apocalyptic number.

18350373503 is a deficient number, since it is larger than the sum of its proper divisors (4528014337).

18350373503 is a wasteful number, since it uses less digits than its factorization.

18350373503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238316557.

The product of its (nonzero) digits is 113400, while the sum is 38.

Adding to 18350373503 its reverse (30537305381), we get a palindrome (48887678884).

The spelling of 18350373503 in words is "eighteen billion, three hundred fifty million, three hundred seventy-three thousand, five hundred three".