1158863 has 2 divisors, whose sum is σ = 1158864. Its totient is φ = 1158862.

The previous prime is 1158847. The next prime is 1158881. The reversal of 1158863 is 3688511.

It is a weak prime.

It is an emirp because it is prime and its reverse (3688511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1158863 - 2⁴ = 1158847 is a prime.

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158823) 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, 579431 + 579432.

It is an arithmetic number, because the mean of its divisors is an integer number (579432).

2^1158863 is an apocalyptic number.

1158863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158863 is an equidigital number, since it uses as much as digits as its factorization.

1158863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 32.

The square root of 1158863 is about 1076.5049930214. The cubic root of 1158863 is about 105.0374167481.

The spelling of 1158863 in words is "one million, one hundred fifty-eight thousand, eight hundred sixty-three".