3888392938849 has 2 divisors, whose sum is σ = 3888392938850. Its totient is φ = 3888392938848.

The previous prime is 3888392938819. The next prime is 3888392938891. The reversal of 3888392938849 is 9488392938883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3309736055824 + 578656883025 = 1819268^2 + 760695^2 .

It is a cyclic number.

It is not a de Polignac number, because 3888392938849 - 2¹⁵ = 3888392906081 is a prime.

It is not a weakly prime, because it can be changed into another prime (3888392938819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944196469424 + 1944196469425.

It is an arithmetic number, because the mean of its divisors is an integer number (1944196469425).

Almost surely, 2^{3888392938849} is an apocalyptic number.

It is an amenable number.

3888392938849 is a deficient number, since it is larger than the sum of its proper divisors (1).

3888392938849 is an equidigital number, since it uses as much as digits as its factorization.

3888392938849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5159780352, while the sum is 82.

The spelling of 3888392938849 in words is "three trillion, eight hundred eighty-eight billion, three hundred ninety-two million, nine hundred thirty-eight thousand, eight hundred forty-nine".