1838105 has 4 divisors (see below), whose sum is σ = 2205732. Its totient is φ = 1470480.

The previous prime is 1838101. The next prime is 1838131. The reversal of 1838105 is 5018381.

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

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 1042441 = 892^2 + 1021^2 .

It is not a de Polignac number, because 1838105 - 2² = 1838101 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1838101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183806 + ... + 183815.

It is an arithmetic number, because the mean of its divisors is an integer number (551433).

2^1838105 is an apocalyptic number.

It is an amenable number.

1838105 is a deficient number, since it is larger than the sum of its proper divisors (367627).

1838105 is an equidigital number, since it uses as much as digits as its factorization.

1838105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367626.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1838105 is about 1355.7673104187. The cubic root of 1838105 is about 122.4964319383.

The spelling of 1838105 in words is "one million, eight hundred thirty-eight thousand, one hundred five".