1838940 has 24 divisors (see below), whose sum is σ = 5149200. Its totient is φ = 490368.

The previous prime is 1838933. The next prime is 1838957. The reversal of 1838940 is 498381.

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 7 ways as a sum of consecutive naturals, for example, 15265 + ... + 15384.

It is an arithmetic number, because the mean of its divisors is an integer number (214550).

2^1838940 is an apocalyptic number.

1838940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1838940 is an abundant number, since it is smaller than the sum of its proper divisors (3310260).

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

1838940 is a wasteful number, since it uses less digits than its factorization.

1838940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30661 (or 30659 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1838940 is about 1356.0752191527. The cubic root of 1838940 is about 122.5149780381.

The spelling of 1838940 in words is "one million, eight hundred thirty-eight thousand, nine hundred forty".