1818494 has 4 divisors (see below), whose sum is σ = 2727744. Its totient is φ = 909246.

The previous prime is 1818469. The next prime is 1818499. The reversal of 1818494 is 4948181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4948181 = 7 ⋅706883.

It is a congruent 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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454622 + ... + 454625.

It is an arithmetic number, because the mean of its divisors is an integer number (681936).

2^1818494 is an apocalyptic number.

1818494 is a deficient number, since it is larger than the sum of its proper divisors (909250).

1818494 is an equidigital number, since it uses as much as digits as its factorization.

1818494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909249.

The product of its digits is 9216, while the sum is 35.

The square root of 1818494 is about 1348.5154800743. The cubic root of 1818494 is about 122.0592295041.

The spelling of 1818494 in words is "one million, eight hundred eighteen thousand, four hundred ninety-four".