1816130 has 16 divisors (see below), whose sum is σ = 3289464. Its totient is φ = 721920.

The previous prime is 1816121. The next prime is 1816141. The reversal of 1816130 is 316181.

It can be written as a sum of positive squares in 4 ways, for example, as 1338649 + 477481 = 1157^2 + 691^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1460 + ... + 2400.

2^1816130 is an apocalyptic number.

1816130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1816130 is a deficient number, since it is larger than the sum of its proper divisors (1473334).

1816130 is a wasteful number, since it uses less digits than its factorization.

1816130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1816130 is about 1347.6386756100. The cubic root of 1816130 is about 122.0063151797.

The spelling of 1816130 in words is "one million, eight hundred sixteen thousand, one hundred thirty".