813738653448 has 32 divisors (see below), whose sum is σ = 2324967581760. Its totient is φ = 232496758080.

The previous prime is 813738653369. The next prime is 813738653461. The reversal of 813738653448 is 844356837318.

It is a happy number.

It is a super-2 number, since 2×813738653448² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813738653391 and 813738653400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2421841063 + ... + 2421841398.

It is an arithmetic number, because the mean of its divisors is an integer number (72655236930).

Almost surely, 2^813738653448 is an apocalyptic number.

It is an amenable number.

813738653448 is an abundant number, since it is smaller than the sum of its proper divisors (1511228928312).

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

813738653448 is a wasteful number, since it uses less digits than its factorization.

813738653448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843682477 (or 4843682473 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 60.

The spelling of 813738653448 in words is "eight hundred thirteen billion, seven hundred thirty-eight million, six hundred fifty-three thousand, four hundred forty-eight".