810000001 has 8 divisors (see below), whose sum is σ = 856459520. Its totient is φ = 763923312.

The previous prime is 809999999. The next prime is 810000011. The reversal of 810000001 is 100000018.

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 810000001 - 2¹ = 809999999 is a prime.

It is a super-2 number, since 2×810000001² = 1312200003240000002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810000011) 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, 91350 + ... + 99823.

It is an arithmetic number, because the mean of its divisors is an integer number (107057440).

Almost surely, 2^810000001 is an apocalyptic number.

It is an amenable number.

810000001 is a deficient number, since it is larger than the sum of its proper divisors (46459519).

810000001 is a wasteful number, since it uses less digits than its factorization.

810000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191415.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 810000001 is about 28460.4989590836. The cubic root of 810000001 is about 932.1697521698.

Adding to 810000001 its reverse (100000018), we get a palindrome (910000019).

It can be divided in two parts, 8 and 10000001, that multiplied together give a palindrome (80000008).

The spelling of 810000001 in words is "eight hundred ten million, one", and thus it is an aban number.