1818874 has 4 divisors (see below), whose sum is σ = 2728314. Its totient is φ = 909436.

The previous prime is 1818871. The next prime is 1818919. The reversal of 1818874 is 4788181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4788181 = 131 ⋅36551.

It can be written as a sum of positive squares in only one way, i.e., 1087849 + 731025 = 1043^2 + 855^2 .

It is not an unprimeable number, because it can be changed into a prime (1818871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454717 + ... + 454720.

2^1818874 is an apocalyptic number.

1818874 is a deficient number, since it is larger than the sum of its proper divisors (909440).

1818874 is an equidigital number, since it uses as much as digits as its factorization.

1818874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909439.

The product of its digits is 14336, while the sum is 37.

The square root of 1818874 is about 1348.6563683904. The cubic root of 1818874 is about 122.0677309118.

The spelling of 1818874 in words is "one million, eight hundred eighteen thousand, eight hundred seventy-four".