1818498 has 32 divisors (see below), whose sum is σ = 4043520. Its totient is φ = 540560.

The previous prime is 1818469. The next prime is 1818499. The reversal of 1818498 is 8948181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1818499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3661 + ... + 4127.

It is an arithmetic number, because the mean of its divisors is an integer number (126360).

2^1818498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021760).

1818498 is an abundant number, since it is smaller than the sum of its proper divisors (2225022).

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

1818498 is a wasteful number, since it uses less digits than its factorization.

1818498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542.

The product of its digits is 18432, while the sum is 39.

The square root of 1818498 is about 1348.5169631859. The cubic root of 1818498 is about 122.0593189987.

The spelling of 1818498 in words is "one million, eight hundred eighteen thousand, four hundred ninety-eight".