18117035203 has 2 divisors, whose sum is σ = 18117035204. Its totient is φ = 18117035202.

The previous prime is 18117035119. The next prime is 18117035207. The reversal of 18117035203 is 30253071181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18117035203 - 2¹³ = 18117027011 is a prime.

It is not a weakly prime, because it can be changed into another prime (18117035207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9058517601 + 9058517602.

It is an arithmetic number, because the mean of its divisors is an integer number (9058517602).

Almost surely, 2^18117035203 is an apocalyptic number.

18117035203 is a deficient number, since it is larger than the sum of its proper divisors (1).

18117035203 is an equidigital number, since it uses as much as digits as its factorization.

18117035203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 18117035203 in words is "eighteen billion, one hundred seventeen million, thirty-five thousand, two hundred three".