1838436 has 24 divisors (see below), whose sum is σ = 4476864. Its totient is φ = 586080.

The previous prime is 1838429. The next prime is 1838453. The reversal of 1838436 is 6348381.

It is a junction number, because it is equal to n+sod(n) for n = 1838397 and 1838406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3055 + ... + 3606.

It is an arithmetic number, because the mean of its divisors is an integer number (186536).

2^1838436 is an apocalyptic number.

It is an amenable number.

1838436 is an abundant number, since it is smaller than the sum of its proper divisors (2638428).

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

1838436 is a wasteful number, since it uses less digits than its factorization.

1838436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691 (or 6689 counting only the distinct ones).

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

The square root of 1838436 is about 1355.8893760186. The cubic root of 1838436 is about 122.5037844173.

Subtracting from 1838436 its sum of digits (33), we obtain a triangular number (1838403 = T₁₉₁₇).

The spelling of 1838436 in words is "one million, eight hundred thirty-eight thousand, four hundred thirty-six".