188620302089 has 2 divisors, whose sum is σ = 188620302090. Its totient is φ = 188620302088.

The previous prime is 188620301981. The next prime is 188620302097. The reversal of 188620302089 is 980203026881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188395062025 + 225240064 = 434045^2 + 15008^2 .

It is a cyclic number.

It is not a de Polignac number, because 188620302089 - 2³⁶ = 119900825353 is a prime.

It is not a weakly prime, because it can be changed into another prime (188620302389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94310151044 + 94310151045.

It is an arithmetic number, because the mean of its divisors is an integer number (94310151045).

Almost surely, 2^188620302089 is an apocalyptic number.

It is an amenable number.

188620302089 is a deficient number, since it is larger than the sum of its proper divisors (1).

188620302089 is an equidigital number, since it uses as much as digits as its factorization.

188620302089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 188620302089 in words is "one hundred eighty-eight billion, six hundred twenty million, three hundred two thousand, eighty-nine".