18342463503 has 96 divisors (see below), whose sum is σ = 30991825920. Its totient is φ = 9445662720.

The previous prime is 18342463493. The next prime is 18342463511. The reversal of 18342463503 is 30536424381.

It is not a de Polignac number, because 18342463503 - 2⁵ = 18342463471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342463103) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 41782158 + ... + 41782596.

It is an arithmetic number, because the mean of its divisors is an integer number (322831520).

Almost surely, 2^18342463503 is an apocalyptic number.

18342463503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18342463503 is a deficient number, since it is larger than the sum of its proper divisors (12649362417).

18342463503 is a wasteful number, since it uses less digits than its factorization.

18342463503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

Adding to 18342463503 its reverse (30536424381), we get a palindrome (48878887884).

The spelling of 18342463503 in words is "eighteen billion, three hundred forty-two million, four hundred sixty-three thousand, five hundred three".