810829816 has 8 divisors (see below), whose sum is σ = 1520305920. Its totient is φ = 405414904.

The previous prime is 810829781. The next prime is 810829819. The reversal of 810829816 is 618928018.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810829819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50676856 + ... + 50676871.

It is an arithmetic number, because the mean of its divisors is an integer number (190038240).

Almost surely, 2^810829816 is an apocalyptic number.

It is an amenable number.

810829816 is a deficient number, since it is larger than the sum of its proper divisors (709476104).

810829816 is a wasteful number, since it uses less digits than its factorization.

810829816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101353733 (or 101353729 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 810829816 is about 28475.0735907741. The cubic root of 810829816 is about 932.4879679894.

The spelling of 810829816 in words is "eight hundred ten million, eight hundred twenty-nine thousand, eight hundred sixteen".