1148905 has 4 divisors (see below), whose sum is σ = 1378692. Its totient is φ = 919120.

The previous prime is 1148879. The next prime is 1148921. The reversal of 1148905 is 5098411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5098411 = 1889 ⋅2699.

It can be written as a sum of positive squares in 2 ways, for example, as 322624 + 826281 = 568^2 + 909^2 .

It is not a de Polignac number, because 1148905 - 2¹¹ = 1146857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 114886 + ... + 114895.

It is an arithmetic number, because the mean of its divisors is an integer number (344673).

2^1148905 is an apocalyptic number.

It is an amenable number.

1148905 is a deficient number, since it is larger than the sum of its proper divisors (229787).

1148905 is an equidigital number, since it uses as much as digits as its factorization.

1148905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229786.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1148905 is about 1071.8698615037. The cubic root of 1148905 is about 104.7356920021.

The spelling of 1148905 in words is "one million, one hundred forty-eight thousand, nine hundred five".