1812486 has 32 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 527904.

The previous prime is 1812457. The next prime is 1812509. The reversal of 1812486 is 6842181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 871 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (128520).

2^1812486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056320).

1812486 is an abundant number, since it is smaller than the sum of its proper divisors (2300154).

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

1812486 is a wasteful number, since it uses less digits than its factorization.

1812486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260.

The product of its digits is 3072, while the sum is 30.

The square root of 1812486 is about 1346.2860023041. The cubic root of 1812486 is about 121.9246601043.

The spelling of 1812486 in words is "one million, eight hundred twelve thousand, four hundred eighty-six".