813441960 has 64 divisors (see below), whose sum is σ = 2711476800. Its totient is φ = 216917568.

The previous prime is 813441947. The next prime is 813441961. The reversal of 813441960 is 69144318.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (813441961) 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 15 ways as a sum of consecutive naturals, for example, 375514 + ... + 377673.

It is an arithmetic number, because the mean of its divisors is an integer number (42366825).

Almost surely, 2^813441960 is an apocalyptic number.

It is an amenable number.

813441960 is an abundant number, since it is smaller than the sum of its proper divisors (1898034840).

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

813441960 is a wasteful number, since it uses less digits than its factorization.

813441960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753207 (or 753197 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 813441960 is about 28520.9039127444. The cubic root of 813441960 is about 933.4882526290.

The spelling of 813441960 in words is "eight hundred thirteen million, four hundred forty-one thousand, nine hundred sixty".