1816000 has 56 divisors (see below), whose sum is σ = 4517136. Its totient is φ = 723200.

The previous prime is 1815977. The next prime is 1816007. The reversal of 1816000 is 6181.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816007) 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 7 ways as a sum of consecutive naturals, for example, 7887 + ... + 8113.

2^1816000 is an apocalyptic number.

1816000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1816000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2258568).

1816000 is an abundant number, since it is smaller than the sum of its proper divisors (2701136).

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

1816000 is an equidigital number, since it uses as much as digits as its factorization.

1816000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1816000 is about 1347.5904422338. The cubic root of 1816000 is about 122.0034040079.

The spelling of 1816000 in words is "one million, eight hundred sixteen thousand".