1818142 has 4 divisors (see below), whose sum is σ = 2727216. Its totient is φ = 909070.

The previous prime is 1818109. The next prime is 1818151. The reversal of 1818142 is 2418181.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454534 + ... + 454537.

It is an arithmetic number, because the mean of its divisors is an integer number (681804).

2^1818142 is an apocalyptic number.

1818142 is a deficient number, since it is larger than the sum of its proper divisors (909074).

1818142 is an equidigital number, since it uses as much as digits as its factorization.

1818142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909073.

The product of its digits is 512, while the sum is 25.

The square root of 1818142 is about 1348.3849598687. The cubic root of 1818142 is about 122.0513534591.

The spelling of 1818142 in words is "one million, eight hundred eighteen thousand, one hundred forty-two".