1118993 has 2 divisors, whose sum is σ = 1118994. Its totient is φ = 1118992.

The previous prime is 1118987. The next prime is 1119029. The reversal of 1118993 is 3998111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 693889 + 425104 = 833^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118993 - 2⁸ = 1118737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559496 + 559497.

It is an arithmetic number, because the mean of its divisors is an integer number (559497).

2^1118993 is an apocalyptic number.

It is an amenable number.

1118993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118993 is an equidigital number, since it uses as much as digits as its factorization.

1118993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 32.

The square root of 1118993 is about 1057.8246546569. The cubic root of 1118993 is about 103.8187486475.

The spelling of 1118993 in words is "one million, one hundred eighteen thousand, nine hundred ninety-three".