1818830 has 32 divisors (see below), whose sum is σ = 3737664. Its totient is φ = 631296.

The previous prime is 1818799. The next prime is 1818833. The reversal of 1818830 is 388181.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1818793 and 1818802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818833) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1799 + ... + 2621.

It is an arithmetic number, because the mean of its divisors is an integer number (116802).

2^1818830 is an apocalyptic number.

1818830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1818830 is an abundant number, since it is smaller than the sum of its proper divisors (1918834).

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

1818830 is a wasteful number, since it uses less digits than its factorization.

1818830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 1818830 is about 1348.6400557599. The cubic root of 1818830 is about 122.0667465989.

The spelling of 1818830 in words is "one million, eight hundred eighteen thousand, eight hundred thirty".