1818130 has 8 divisors (see below), whose sum is σ = 3272652. Its totient is φ = 727248.

The previous prime is 1818109. The next prime is 1818151. The reversal of 1818130 is 318181.

It is an interprime number because it is at equal distance from previous prime (1818109) and next prime (1818151).

It can be written as a sum of positive squares in 2 ways, for example, as 1814409 + 3721 = 1347^2 + 61^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90897 + ... + 90916.

2^1818130 is an apocalyptic number.

1818130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1818130 is a deficient number, since it is larger than the sum of its proper divisors (1454522).

1818130 is a wasteful number, since it uses less digits than its factorization.

1818130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181820.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1818130 is about 1348.3805100935. The cubic root of 1818130 is about 122.0510849397.

The spelling of 1818130 in words is "one million, eight hundred eighteen thousand, one hundred thirty".