18341768503 has 30 divisors (see below), whose sum is σ = 20608838776. Its totient is φ = 16320688704.

The previous prime is 18341768477. The next prime is 18341768521. The reversal of 18341768503 is 30586714381.

It is not a de Polignac number, because 18341768503 - 2⁹ = 18341767991 is a prime.

It is a super-2 number, since 2×18341768503² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18341768563) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 37662526 + ... + 37663012.

Almost surely, 2^18341768503 is an apocalyptic number.

18341768503 is a deficient number, since it is larger than the sum of its proper divisors (2267070273).

18341768503 is an frugal number, since it uses more digits than its factorization.

18341768503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 18341768503 in words is "eighteen billion, three hundred forty-one million, seven hundred sixty-eight thousand, five hundred three".