811397830 has 32 divisors (see below), whose sum is σ = 1473448320. Its totient is φ = 321699840.

The previous prime is 811397819. The next prime is 811397837. The reversal of 811397830 is 38793118.

811397830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811397837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613570 + ... + 614890.

It is an arithmetic number, because the mean of its divisors is an integer number (46045260).

Almost surely, 2^811397830 is an apocalyptic number.

811397830 is a deficient number, since it is larger than the sum of its proper divisors (662050490).

811397830 is a wasteful number, since it uses less digits than its factorization.

811397830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 811397830 is about 28485.0457257839. The cubic root of 811397830 is about 932.7056637275.

Adding to 811397830 its product of nonzero digits (36288), we get a palindrome (811434118).

The spelling of 811397830 in words is "eight hundred eleven million, three hundred ninety-seven thousand, eight hundred thirty".