1826385 has 16 divisors (see below), whose sum is σ = 3188160. Its totient is φ = 885440.

The previous prime is 1826371. The next prime is 1826389. The reversal of 1826385 is 5836281.

It is a happy number.

It is not a de Polignac number, because 1826385 - 2⁷ = 1826257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1826389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5370 + ... + 5699.

It is an arithmetic number, because the mean of its divisors is an integer number (199260).

2^1826385 is an apocalyptic number.

1826385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1826385 is a deficient number, since it is larger than the sum of its proper divisors (1361775).

1826385 is a wasteful number, since it uses less digits than its factorization.

1826385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11088.

The product of its digits is 11520, while the sum is 33.

The square root of 1826385 is about 1351.4381228898. The cubic root of 1826385 is about 122.2355254880.

It can be divided in two parts, 1826 and 385, that added together give a triangular number (2211 = T₆₆).

The spelling of 1826385 in words is "one million, eight hundred twenty-six thousand, three hundred eighty-five".