1118203 has 2 divisors, whose sum is σ = 1118204. Its totient is φ = 1118202.

The previous prime is 1118197. The next prime is 1118219. The reversal of 1118203 is 3028111.

It is an a-pointer prime, because the next prime (1118219) can be obtained adding 1118203 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1118203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118003) 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, 559101 + 559102.

It is an arithmetic number, because the mean of its divisors is an integer number (559102).

2^1118203 is an apocalyptic number.

1118203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118203 is an equidigital number, since it uses as much as digits as its factorization.

1118203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1118203 is about 1057.4511809062. The cubic root of 1118203 is about 103.7943111637.

The spelling of 1118203 in words is "one million, one hundred eighteen thousand, two hundred three".