3918919913 has 2 divisors, whose sum is σ = 3918919914. Its totient is φ = 3918919912.

The previous prime is 3918919903. The next prime is 3918919957. The reversal of 3918919913 is 3199198193.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3319257769 + 599662144 = 57613^2 + 24488^2 .

It is a cyclic number.

It is not a de Polignac number, because 3918919913 - 2⁴ = 3918919897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3918919903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959459956 + 1959459957.

It is an arithmetic number, because the mean of its divisors is an integer number (1959459957).

Almost surely, 2^3918919913 is an apocalyptic number.

It is an amenable number.

3918919913 is a deficient number, since it is larger than the sum of its proper divisors (1).

3918919913 is an equidigital number, since it uses as much as digits as its factorization.

3918919913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 53.

The square root of 3918919913 is about 62601.2772473533. The cubic root of 3918919913 is about 1576.6022043550.

The spelling of 3918919913 in words is "three billion, nine hundred eighteen million, nine hundred nineteen thousand, nine hundred thirteen".