1813163 has 8 divisors (see below), whose sum is σ = 1990656. Its totient is φ = 1637800.

The previous prime is 1813157. The next prime is 1813177. The reversal of 1813163 is 3613181.

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

It is a cyclic number.

It is not a de Polignac number, because 1813163 - 2⁸ = 1812907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818163) 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 7 ways as a sum of consecutive naturals, for example, 1670 + ... + 2532.

It is an arithmetic number, because the mean of its divisors is an integer number (248832).

2^1813163 is an apocalyptic number.

1813163 is a deficient number, since it is larger than the sum of its proper divisors (177493).

1813163 is a wasteful number, since it uses less digits than its factorization.

1813163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065.

The product of its digits is 432, while the sum is 23.

The square root of 1813163 is about 1346.5374112887. The cubic root of 1813163 is about 121.9398386527.

The spelling of 1813163 in words is "one million, eight hundred thirteen thousand, one hundred sixty-three".