1818122 has 4 divisors (see below), whose sum is σ = 2727186. Its totient is φ = 909060.

The previous prime is 1818109. The next prime is 1818151. The reversal of 1818122 is 2218181.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1062961 + 755161 = 1031^2 + 869^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454529 + ... + 454532.

2^1818122 is an apocalyptic number.

1818122 is a deficient number, since it is larger than the sum of its proper divisors (909064).

1818122 is an equidigital number, since it uses as much as digits as its factorization.

1818122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909063.

The product of its digits is 256, while the sum is 23.

The square root of 1818122 is about 1348.3775435686. The cubic root of 1818122 is about 122.0509059261.

The spelling of 1818122 in words is "one million, eight hundred eighteen thousand, one hundred twenty-two".