810010881 has 32 divisors (see below), whose sum is σ = 1212013440. Its totient is φ = 534643200.

The previous prime is 810010871. The next prime is 810010921. The reversal of 810010881 is 188010018.

It is not a de Polignac number, because 810010881 - 2¹⁰ = 810009857 is a prime.

It is a super-2 number, since 2×810010881² = 1312235254676792322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (810010871) 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 31 ways as a sum of consecutive naturals, for example, 1828246 + ... + 1828688.

It is an arithmetic number, because the mean of its divisors is an integer number (37875420).

Almost surely, 2^810010881 is an apocalyptic number.

It is an amenable number.

810010881 is a deficient number, since it is larger than the sum of its proper divisors (402002559).

810010881 is a wasteful number, since it uses less digits than its factorization.

810010881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

The square root of 810010881 is about 28460.6901005580. The cubic root of 810010881 is about 932.1739258165.

Adding to 810010881 its reverse (188010018), we get a palindrome (998020899).

It can be divided in two parts, 8100 and 10881, that added together give a palindrome (18981).

The spelling of 810010881 in words is "eight hundred ten million, ten thousand, eight hundred eighty-one".