811537496 has 64 divisors (see below), whose sum is σ = 1923194880. Its totient is φ = 311834880.

The previous prime is 811537487. The next prime is 811537501. The reversal of 811537496 is 694735118.

It is a Harshad number since it is a multiple of its sum of digits (44).

811537496 is a Rhonda number in base 10.

Its product of digits (181440) is a multiple of the sum of its prime factors (18144).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 35945 + ... + 53991.

It is an arithmetic number, because the mean of its divisors is an integer number (30049920).

Almost surely, 2^811537496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811537496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961597440).

811537496 is an abundant number, since it is smaller than the sum of its proper divisors (1111657384).

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

811537496 is a wasteful number, since it uses less digits than its factorization.

811537496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18144 (or 18140 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 811537496 is about 28487.4971873627. The cubic root of 811537496 is about 932.7591762342.

The spelling of 811537496 in words is "eight hundred eleven million, five hundred thirty-seven thousand, four hundred ninety-six".