1385915 has 4 divisors (see below), whose sum is σ = 1663104. Its totient is φ = 1108728.

The previous prime is 1385899. The next prime is 1385921. The reversal of 1385915 is 5195831.

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

It is a cyclic number.

It is not a de Polignac number, because 1385915 - 2⁴ = 1385899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138587 + ... + 138596.

It is an arithmetic number, because the mean of its divisors is an integer number (415776).

2^1385915 is an apocalyptic number.

1385915 is a deficient number, since it is larger than the sum of its proper divisors (277189).

1385915 is an equidigital number, since it uses as much as digits as its factorization.

1385915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277188.

The product of its digits is 5400, while the sum is 32.

The square root of 1385915 is about 1177.2489116580. The cubic root of 1385915 is about 111.4924686743.

The spelling of 1385915 in words is "one million, three hundred eighty-five thousand, nine hundred fifteen".