3158197813 has 2 divisors, whose sum is σ = 3158197814. Its totient is φ = 3158197812.

The previous prime is 3158197811. The next prime is 3158197907. The reversal of 3158197813 is 3187918513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3049579729 + 108618084 = 55223^2 + 10422^2 .

It is a cyclic number.

It is not a de Polignac number, because 3158197813 - 2¹ = 3158197811 is a prime.

Together with 3158197811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3158197811) 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 as a sum of consecutive naturals, namely, 1579098906 + 1579098907.

It is an arithmetic number, because the mean of its divisors is an integer number (1579098907).

Almost surely, 2^3158197813 is an apocalyptic number.

It is an amenable number.

3158197813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3158197813 is an equidigital number, since it uses as much as digits as its factorization.

3158197813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 46.

The square root of 3158197813 is about 56197.8452700813. The cubic root of 3158197813 is about 1467.1677635282.

The spelling of 3158197813 in words is "three billion, one hundred fifty-eight million, one hundred ninety-seven thousand, eight hundred thirteen".