388005806189 has 2 divisors, whose sum is σ = 388005806190. Its totient is φ = 388005806188.

The previous prime is 388005806183. The next prime is 388005806191. The reversal of 388005806189 is 981608500883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315922684900 + 72083121289 = 562070^2 + 268483^2 .

It is a cyclic number.

It is not a de Polignac number, because 388005806189 - 2³² = 383710838893 is a prime.

Together with 388005806191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388005806183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194002903094 + 194002903095.

It is an arithmetic number, because the mean of its divisors is an integer number (194002903095).

Almost surely, 2^388005806189 is an apocalyptic number.

It is an amenable number.

388005806189 is a deficient number, since it is larger than the sum of its proper divisors (1).

388005806189 is an equidigital number, since it uses as much as digits as its factorization.

388005806189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 56.

The spelling of 388005806189 in words is "three hundred eighty-eight billion, five million, eight hundred six thousand, one hundred eighty-nine".