1812492 has 72 divisors (see below), whose sum is σ = 5241600. Its totient is φ = 522720.

The previous prime is 1812457. The next prime is 1812509. The reversal of 1812492 is 2942181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9009 + ... + 9207.

It is an arithmetic number, because the mean of its divisors is an integer number (72800).

2^1812492 is an apocalyptic number.

1812492 is a gapful number since it is divisible by the number (12) 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 1812492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2620800).

1812492 is an abundant number, since it is smaller than the sum of its proper divisors (3429108).

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

1812492 is a wasteful number, since it uses less digits than its factorization.

1812492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 238 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1812492 is about 1346.2882306549. The cubic root of 1812492 is about 121.9247946427.

It can be divided in two parts, 1812 and 492, that added together give a square (2304 = 48²).

The spelling of 1812492 in words is "one million, eight hundred twelve thousand, four hundred ninety-two".