810817049 has 8 divisors (see below), whose sum is σ = 940479168. Its totient is φ = 684612720.

The previous prime is 810817037. The next prime is 810817067. The reversal of 810817049 is 940718018.

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 810817049 - 2⁸ = 810816793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810817009) 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 7 ways as a sum of consecutive naturals, for example, 863942 + ... + 864879.

It is an arithmetic number, because the mean of its divisors is an integer number (117559896).

Almost surely, 2^810817049 is an apocalyptic number.

It is an amenable number.

810817049 is a deficient number, since it is larger than the sum of its proper divisors (129662119).

810817049 is a wasteful number, since it uses less digits than its factorization.

810817049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728895.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 810817049 is about 28474.8494113665. The cubic root of 810817049 is about 932.4830737703.

The spelling of 810817049 in words is "eight hundred ten million, eight hundred seventeen thousand, forty-nine".