1813135 has 16 divisors (see below), whose sum is σ = 2340576. Its totient is φ = 1343488.

The previous prime is 1813121. The next prime is 1813139. The reversal of 1813135 is 5313181.

It is a cyclic number.

It is not a de Polignac number, because 1813135 - 2⁹ = 1812623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6927 + ... + 7183.

It is an arithmetic number, because the mean of its divisors is an integer number (146286).

2^1813135 is an apocalyptic number.

1813135 is a deficient number, since it is larger than the sum of its proper divisors (527441).

1813135 is a wasteful number, since it uses less digits than its factorization.

1813135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362.

The product of its digits is 360, while the sum is 22.

The square root of 1813135 is about 1346.5270142110. The cubic root of 1813135 is about 121.9392109590.

The spelling of 1813135 in words is "one million, eight hundred thirteen thousand, one hundred thirty-five".