1838836 has 12 divisors (see below), whose sum is σ = 3233412. Its totient is φ = 915008.

The previous prime is 1838819. The next prime is 1838843. The reversal of 1838836 is 6388381.

It can be written as a sum of positive squares in 2 ways, for example, as 384400 + 1454436 = 620^2 + 1206^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1838795 and 1838804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55 + ... + 1918.

It is an arithmetic number, because the mean of its divisors is an integer number (269451).

2^1838836 is an apocalyptic number.

It is an amenable number.

1838836 is a deficient number, since it is larger than the sum of its proper divisors (1394576).

1838836 is a wasteful number, since it uses less digits than its factorization.

1838836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210 (or 2208 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 1838836 is about 1356.0368726550. The cubic root of 1838836 is about 122.5126684108.

The spelling of 1838836 in words is "one million, eight hundred thirty-eight thousand, eight hundred thirty-six".