1385838 has 12 divisors (see below), whose sum is σ = 3002688. Its totient is φ = 461940.

The previous prime is 1385837. The next prime is 1385843. The reversal of 1385838 is 8385831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385833) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 38478 + ... + 38513.

It is an arithmetic number, because the mean of its divisors is an integer number (250224).

2^1385838 is an apocalyptic number.

1385838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1385838 is an abundant number, since it is smaller than the sum of its proper divisors (1616850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1385838 is a wasteful number, since it uses less digits than its factorization.

1385838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76999 (or 76996 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1385838 is about 1177.2162078395. The cubic root of 1385838 is about 111.4904038341.

The spelling of 1385838 in words is "one million, three hundred eighty-five thousand, eight hundred thirty-eight".