1310812038649 has 3 divisors (see below), whose sum is σ = 1310813183557. Its totient is φ = 1310810893742.

The previous prime is 1310812038647. The next prime is 1310812038673. The reversal of 1310812038649 is 9468302180131.

The square root of 1310812038649 is 1144907.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1310812038649 - 2¹ = 1310812038647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310812038599 and 1310812038608.

It is not an unprimeable number, because it can be changed into a prime (1310812038647) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 572454 + ... + 1717360.

Almost surely, 2^{1310812038649} is an apocalyptic number.

1310812038649 is the 1144907-th square number.

1310812038649 is the 572454-th centered octagonal number.

It is an amenable number.

1310812038649 is a deficient number, since it is larger than the sum of its proper divisors (1144908).

1310812038649 is an frugal number, since it uses more digits than its factorization.

1310812038649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289814 (or 1144907 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 1310812038649 in words is "one trillion, three hundred ten billion, eight hundred twelve million, thirty-eight thousand, six hundred forty-nine".