1381085 has 8 divisors (see below), whose sum is σ = 1697976. Its totient is φ = 1077760.

The previous prime is 1381069. The next prime is 1381103. The reversal of 1381085 is 5801831.

It can be written as a sum of positive squares in 4 ways, for example, as 2809 + 1378276 = 53^2 + 1174^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1381085 - 2⁴ = 1381069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 3164 + ... + 3573.

It is an arithmetic number, because the mean of its divisors is an integer number (212247).

2^1381085 is an apocalyptic number.

It is an amenable number.

1381085 is a deficient number, since it is larger than the sum of its proper divisors (316891).

1381085 is an equidigital number, since it uses as much as digits as its factorization.

1381085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6783.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1381085 is about 1175.1957283789. The cubic root of 1381085 is about 111.3627985246.

The spelling of 1381085 in words is "one million, three hundred eighty-one thousand, eighty-five".