18342313903 has 2 divisors, whose sum is σ = 18342313904. Its totient is φ = 18342313902.

The previous prime is 18342313867. The next prime is 18342313937. The reversal of 18342313903 is 30931324381.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (30931324381) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18342313903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18342313973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9171156951 + 9171156952.

It is an arithmetic number, because the mean of its divisors is an integer number (9171156952).

Almost surely, 2^18342313903 is an apocalyptic number.

18342313903 is a deficient number, since it is larger than the sum of its proper divisors (1).

18342313903 is an equidigital number, since it uses as much as digits as its factorization.

18342313903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 18342313903 in words is "eighteen billion, three hundred forty-two million, three hundred thirteen thousand, nine hundred three".