1813107 has 4 divisors (see below), whose sum is σ = 2417480. Its totient is φ = 1208736.

The previous prime is 1813081. The next prime is 1813121. The reversal of 1813107 is 7013181.

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

It is not a de Polignac number, because 1813107 - 2⁸ = 1812851 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1813157) 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 3 ways as a sum of consecutive naturals, for example, 302182 + ... + 302187.

It is an arithmetic number, because the mean of its divisors is an integer number (604370).

2^1813107 is an apocalyptic number.

1813107 is a deficient number, since it is larger than the sum of its proper divisors (604373).

1813107 is an equidigital number, since it uses as much as digits as its factorization.

1813107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604372.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 1813107 is about 1346.5166170531. The cubic root of 1813107 is about 121.9385832588.

Adding to 1813107 its reverse (7013181), we get a palindrome (8826288).

The spelling of 1813107 in words is "one million, eight hundred thirteen thousand, one hundred seven".