388106107889 has 2 divisors, whose sum is σ = 388106107890. Its totient is φ = 388106107888.

The previous prime is 388106107847. The next prime is 388106107891. The reversal of 388106107889 is 988701601883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353596729600 + 34509378289 = 594640^2 + 185767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388106107889 is a prime.

Together with 388106107891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (388106107589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194053053944 + 194053053945.

It is an arithmetic number, because the mean of its divisors is an integer number (194053053945).

Almost surely, 2^388106107889 is an apocalyptic number.

It is an amenable number.

388106107889 is a deficient number, since it is larger than the sum of its proper divisors (1).

388106107889 is an equidigital number, since it uses as much as digits as its factorization.

388106107889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 59.

The spelling of 388106107889 in words is "three hundred eighty-eight billion, one hundred six million, one hundred seven thousand, eight hundred eighty-nine".