3130813649 has 4 divisors (see below), whose sum is σ = 3159536820. Its totient is φ = 3102090480.

The previous prime is 3130813643. The next prime is 3130813667. The reversal of 3130813649 is 9463180313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9463180313 = 227 ⋅41688019.

It can be written as a sum of positive squares in 2 ways, for example, as 1945251025 + 1185562624 = 44105^2 + 34432^2 .

It is a cyclic number.

It is not a de Polignac number, because 3130813649 - 2⁴ = 3130813633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3130813643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14361422 + ... + 14361639.

It is an arithmetic number, because the mean of its divisors is an integer number (789884205).

Almost surely, 2^3130813649 is an apocalyptic number.

It is an amenable number.

3130813649 is a deficient number, since it is larger than the sum of its proper divisors (28723171).

3130813649 is a wasteful number, since it uses less digits than its factorization.

3130813649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28723170.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 3130813649 is about 55953.6741331613. The cubic root of 3130813649 is about 1462.9149321510.

The spelling of 3130813649 in words is "three billion, one hundred thirty million, eight hundred thirteen thousand, six hundred forty-nine".