800181 has 12 divisors (see below), whose sum is σ = 1173952. Its totient is φ = 525096.

The previous prime is 800171. The next prime is 800209. The reversal of 800181 is 181008.

It is a happy number.

It is not a de Polignac number, because 800181 - 2⁶ = 800117 is a prime.

It is a super-2 number, since 2×800181² = 1280579265522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800131) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 61 + ... + 1266.

2⁸⁰⁰¹⁸¹ is an apocalyptic number.

It is an amenable number.

800181 is a deficient number, since it is larger than the sum of its proper divisors (373771).

800181 is a wasteful number, since it uses less digits than its factorization.

800181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 800181 is about 894.5283673534. The cubic root of 800181 is about 92.8387772075.

Adding to 800181 its reverse (181008), we get a palindrome (981189).

The spelling of 800181 in words is "eight hundred thousand, one hundred eighty-one".