18357103 has 2 divisors, whose sum is σ = 18357104. Its totient is φ = 18357102.

The previous prime is 18357089. The next prime is 18357107. The reversal of 18357103 is 30175381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18357103 - 2¹⁷ = 18226031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18357107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9178551 + 9178552.

It is an arithmetic number, because the mean of its divisors is an integer number (9178552).

Almost surely, 2^18357103 is an apocalyptic number.

18357103 is a deficient number, since it is larger than the sum of its proper divisors (1).

18357103 is an equidigital number, since it uses as much as digits as its factorization.

18357103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 18357103 is about 4284.5189928392. The cubic root of 18357103 is about 263.7959042014.

The spelling of 18357103 in words is "eighteen million, three hundred fifty-seven thousand, one hundred three".