1381585 has 8 divisors (see below), whose sum is σ = 1745280. Its totient is φ = 1047024.

The previous prime is 1381559. The next prime is 1381609. The reversal of 1381585 is 5851831.

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

It is a cyclic number.

It is not a de Polignac number, because 1381585 - 2⁵ = 1381553 is a prime.

It is a super-2 number, since 2×1381585² = 3817554224450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7177 + ... + 7366.

It is an arithmetic number, because the mean of its divisors is an integer number (218160).

2^1381585 is an apocalyptic number.

It is an amenable number.

1381585 is a deficient number, since it is larger than the sum of its proper divisors (363695).

1381585 is a wasteful number, since it uses less digits than its factorization.

1381585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14567.

The product of its digits is 4800, while the sum is 31.

The square root of 1381585 is about 1175.4084396498. The cubic root of 1381585 is about 111.3762359503.

The spelling of 1381585 in words is "one million, three hundred eighty-one thousand, five hundred eighty-five".