1118393 has 2 divisors, whose sum is σ = 1118394. Its totient is φ = 1118392.

The previous prime is 1118371. The next prime is 1118419. The reversal of 1118393 is 3938111.

It is an a-pointer prime, because the next prime (1118419) can be obtained adding 1118393 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024144 + 94249 = 1012^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118393 - 2⁸ = 1118137 is a prime.

It is a super-3 number, since 3×1118393³ = 4196667631435933371, which contains 333 as substring.

It is a Chen prime.

It is equal to p₈₇₀₆₅ and since 1118393 and 87065 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1118303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559196 + 559197.

It is an arithmetic number, because the mean of its divisors is an integer number (559197).

2^1118393 is an apocalyptic number.

It is an amenable number.

1118393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118393 is an equidigital number, since it uses as much as digits as its factorization.

1118393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 26.

The square root of 1118393 is about 1057.5410157531. The cubic root of 1118393 is about 103.8001895841.

The spelling of 1118393 in words is "one million, one hundred eighteen thousand, three hundred ninety-three".