1834638 has 32 divisors (see below), whose sum is σ = 4050816. Its totient is φ = 550368.

The previous prime is 1834631. The next prime is 1834639. The reversal of 1834638 is 8364381.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1834599 and 1834608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1834631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3081 + ... + 3627.

It is an arithmetic number, because the mean of its divisors is an integer number (126588).

2^1834638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1834638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2025408).

1834638 is an abundant number, since it is smaller than the sum of its proper divisors (2216178).

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

1834638 is a wasteful number, since it uses less digits than its factorization.

1834638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its digits is 13824, while the sum is 33.

The square root of 1834638 is about 1354.4880951858. The cubic root of 1834638 is about 122.4193666224.

The spelling of 1834638 in words is "one million, eight hundred thirty-four thousand, six hundred thirty-eight".