1838530 has 16 divisors (see below), whose sum is σ = 3399480. Its totient is φ = 715392.

The previous prime is 1838527. The next prime is 1838531. The reversal of 1838530 is 358381.

It can be written as a sum of positive squares in 4 ways, for example, as 1565001 + 273529 = 1251^2 + 523^2 .

It is not an unprimeable number, because it can be changed into a prime (1838531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2115 + ... + 2854.

2^1838530 is an apocalyptic number.

1838530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1838530 is a deficient number, since it is larger than the sum of its proper divisors (1560950).

1838530 is a wasteful number, since it uses less digits than its factorization.

1838530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5013.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1838530 is about 1355.9240391703. The cubic root of 1838530 is about 122.5058722716.

The spelling of 1838530 in words is "one million, eight hundred thirty-eight thousand, five hundred thirty".