3858861613 has 2 divisors, whose sum is σ = 3858861614. Its totient is φ = 3858861612.

The previous prime is 3858861529. The next prime is 3858861649. The reversal of 3858861613 is 3161688583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3777085764 + 81775849 = 61458^2 + 9043^2 .

It is a cyclic number.

It is not a de Polignac number, because 3858861613 - 2²⁹ = 3321990701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3858868613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1929430806 + 1929430807.

It is an arithmetic number, because the mean of its divisors is an integer number (1929430807).

Almost surely, 2^3858861613 is an apocalyptic number.

It is an amenable number.

3858861613 is a deficient number, since it is larger than the sum of its proper divisors (1).

3858861613 is an equidigital number, since it uses as much as digits as its factorization.

3858861613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 49.

The square root of 3858861613 is about 62119.7360989243. The cubic root of 3858861613 is about 1568.5067838409.

The spelling of 3858861613 in words is "three billion, eight hundred fifty-eight million, eight hundred sixty-one thousand, six hundred thirteen".