813401474740 has 12 divisors (see below), whose sum is σ = 1708143096996. Its totient is φ = 325360589888.

The previous prime is 813401474723. The next prime is 813401474749. The reversal of 813401474740 is 47474104318.

It can be written as a sum of positive squares in 2 ways, for example, as 634947610896 + 178453863844 = 796836^2 + 422438^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813401474749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20335036849 + ... + 20335036888.

It is an arithmetic number, because the mean of its divisors is an integer number (142345258083).

Almost surely, 2^813401474740 is an apocalyptic number.

It is an amenable number.

813401474740 is an abundant number, since it is smaller than the sum of its proper divisors (894741622256).

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

813401474740 is a wasteful number, since it uses less digits than its factorization.

813401474740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40670073746 (or 40670073744 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 43.

The spelling of 813401474740 in words is "eight hundred thirteen billion, four hundred one million, four hundred seventy-four thousand, seven hundred forty".