1158923 has 2 divisors, whose sum is σ = 1158924. Its totient is φ = 1158922.

The previous prime is 1158887. The next prime is 1158953. The reversal of 1158923 is 3298511.

It is a strong prime.

It is an emirp because it is prime and its reverse (3298511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1158923 - 2¹⁰ = 1157899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1158953) 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, 579461 + 579462.

It is an arithmetic number, because the mean of its divisors is an integer number (579462).

2^1158923 is an apocalyptic number.

1158923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158923 is an equidigital number, since it uses as much as digits as its factorization.

1158923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 29.

The square root of 1158923 is about 1076.5328606225. The cubic root of 1158923 is about 105.0392294836.

The spelling of 1158923 in words is "one million, one hundred fifty-eight thousand, nine hundred twenty-three".