1838885 has 4 divisors (see below), whose sum is σ = 2206668. Its totient is φ = 1471104.

The previous prime is 1838869. The next prime is 1838909. The reversal of 1838885 is 5888381.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5888381 = 283 ⋅20807.

It can be written as a sum of positive squares in 2 ways, for example, as 1094116 + 744769 = 1046^2 + 863^2 .

It is a cyclic number.

It is not a de Polignac number, because 1838885 - 2⁴ = 1838869 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183884 + ... + 183893.

It is an arithmetic number, because the mean of its divisors is an integer number (551667).

2^1838885 is an apocalyptic number.

It is an amenable number.

1838885 is a deficient number, since it is larger than the sum of its proper divisors (367783).

1838885 is an equidigital number, since it uses as much as digits as its factorization.

1838885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367782.

The product of its digits is 61440, while the sum is 41.

The square root of 1838885 is about 1356.0549398900. The cubic root of 1838885 is about 122.5137566114.

The spelling of 1838885 in words is "one million, eight hundred thirty-eight thousand, eight hundred eighty-five".