1838020 has 24 divisors (see below), whose sum is σ = 3994200. Its totient is φ = 709632.

The previous prime is 1837981. The next prime is 1838033. The reversal of 1838020 is 208381.

It can be written as a sum of positive squares in 4 ways, for example, as 440896 + 1397124 = 664^2 + 1182^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1837982 and 1838000.

It is a congruent number.

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, 1005 + ... + 2164.

It is an arithmetic number, because the mean of its divisors is an integer number (166425).

2^1838020 is an apocalyptic number.

1838020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1838020 is an abundant number, since it is smaller than the sum of its proper divisors (2156180).

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

1838020 is a wasteful number, since it uses less digits than its factorization.

1838020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1838020 is about 1355.7359624942. The cubic root of 1838020 is about 122.4945436970.

The spelling of 1838020 in words is "one million, eight hundred thirty-eight thousand, twenty".