1138385 has 16 divisors (see below), whose sum is σ = 1503360. Its totient is φ = 823680.

The previous prime is 1138369. The next prime is 1138391. The reversal of 1138385 is 5838311.

1138385 is nontrivially palindromic in base 3.

It is not a de Polignac number, because 1138385 - 2⁴ = 1138369 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1925 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (93960).

2^1138385 is an apocalyptic number.

It is an amenable number.

1138385 is a deficient number, since it is larger than the sum of its proper divisors (364975).

1138385 is a wasteful number, since it uses less digits than its factorization.

1138385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its digits is 2880, while the sum is 29.

The square root of 1138385 is about 1066.9512641166. The cubic root of 1138385 is about 104.4150389613.

The spelling of 1138385 in words is "one million, one hundred thirty-eight thousand, three hundred eighty-five".