811630000 has 50 divisors (see below), whose sum is σ = 1965061604. Its totient is φ = 324648000.

The previous prime is 811629977. The next prime is 811630007. The reversal of 811630000 is 36118.

It is a tau number, because it is divible by the number of its divisors (50).

It is a self number, because there is not a number n which added to its sum of digits gives 811630000.

It is not an unprimeable number, because it can be changed into a prime (811630007) 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 9 ways as a sum of consecutive naturals, for example, 30582 + ... + 50581.

Almost surely, 2^811630000 is an apocalyptic number.

811630000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

811630000 is an abundant number, since it is smaller than the sum of its proper divisors (1153431604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811630000 is an equidigital number, since it uses as much as digits as its factorization.

811630000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81191 (or 81170 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 811630000 is about 28489.1207305526. The cubic root of 811630000 is about 932.7946154169.

Adding to 811630000 its reverse (36118), we get a palindrome (811666118).

The spelling of 811630000 in words is "eight hundred eleven million, six hundred thirty thousand".