1138265 has 4 divisors (see below), whose sum is σ = 1365924. Its totient is φ = 910608.

The previous prime is 1138237. The next prime is 1138273. The reversal of 1138265 is 5628311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 299209 + 839056 = 547^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138265 - 2¹² = 1134169 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, 113822 + ... + 113831.

It is an arithmetic number, because the mean of its divisors is an integer number (341481).

2^1138265 is an apocalyptic number.

It is an amenable number.

1138265 is a deficient number, since it is larger than the sum of its proper divisors (227659).

1138265 is an equidigital number, since it uses as much as digits as its factorization.

1138265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227658.

The product of its digits is 1440, while the sum is 26.

The square root of 1138265 is about 1066.8950276386. The cubic root of 1138265 is about 104.4113699492.

The spelling of 1138265 in words is "one million, one hundred thirty-eight thousand, two hundred sixty-five".