3919986013 has 2 divisors, whose sum is σ = 3919986014. Its totient is φ = 3919986012.

The previous prime is 3919986011. The next prime is 3919986101. The reversal of 3919986013 is 3106899193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2998438564 + 921547449 = 54758^2 + 30357^2 .

It is an emirp because it is prime and its reverse (3106899193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3919986013 - 2¹ = 3919986011 is a prime.

Together with 3919986011, 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 (3919986011) 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, 1959993006 + 1959993007.

It is an arithmetic number, because the mean of its divisors is an integer number (1959993007).

Almost surely, 2^3919986013 is an apocalyptic number.

It is an amenable number.

3919986013 is a deficient number, since it is larger than the sum of its proper divisors (1).

3919986013 is an equidigital number, since it uses as much as digits as its factorization.

3919986013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 3919986013 is about 62609.7916703130. The cubic root of 3919986013 is about 1576.7451572820.

The spelling of 3919986013 in words is "three billion, nine hundred nineteen million, nine hundred eighty-six thousand, thirteen".