813654912 has 128 divisors (see below), whose sum is σ = 2479334400. Its totient is φ = 231598080.

The previous prime is 813654871. The next prime is 813654931. The reversal of 813654912 is 219456318.

It is a tau number, because it is divible by the number of its divisors (128).

Its product of digits (51840) is a multiple of the sum of its prime divisors (1152).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1131289 + ... + 1132007.

It is an arithmetic number, because the mean of its divisors is an integer number (19369800).

Almost surely, 2^813654912 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 813654912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239667200).

813654912 is an abundant number, since it is smaller than the sum of its proper divisors (1665679488).

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

813654912 is a wasteful number, since it uses less digits than its factorization.

813654912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164 (or 1152 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 813654912 is about 28524.6369302047. The cubic root of 813654912 is about 933.5697052118.

The spelling of 813654912 in words is "eight hundred thirteen million, six hundred fifty-four thousand, nine hundred twelve".