1149803 has 2 divisors, whose sum is σ = 1149804. Its totient is φ = 1149802.

The previous prime is 1149779. The next prime is 1149817. The reversal of 1149803 is 3089411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1149803 - 2¹⁶ = 1084267 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1149403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574901 + 574902.

It is an arithmetic number, because the mean of its divisors is an integer number (574902).

2^1149803 is an apocalyptic number.

1149803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149803 is an equidigital number, since it uses as much as digits as its factorization.

1149803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1149803 is about 1072.2886738188. The cubic root of 1149803 is about 104.7629725163.

The spelling of 1149803 in words is "one million, one hundred forty-nine thousand, eight hundred three".