3889557613 has 2 divisors, whose sum is σ = 3889557614. Its totient is φ = 3889557612.

The previous prime is 3889557589. The next prime is 3889557629. The reversal of 3889557613 is 3167559883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3306480004 + 583077609 = 57502^2 + 24147^2 .

It is an emirp because it is prime and its reverse (3167559883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3889557613 - 2²¹ = 3887460461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3889557673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944778806 + 1944778807.

It is an arithmetic number, because the mean of its divisors is an integer number (1944778807).

Almost surely, 2^3889557613 is an apocalyptic number.

It is an amenable number.

3889557613 is a deficient number, since it is larger than the sum of its proper divisors (1).

3889557613 is an equidigital number, since it uses as much as digits as its factorization.

3889557613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 55.

The square root of 3889557613 is about 62366.3179368479. The cubic root of 3889557613 is about 1572.6547931026.

The spelling of 3889557613 in words is "three billion, eight hundred eighty-nine million, five hundred fifty-seven thousand, six hundred thirteen".