188696089 has 2 divisors, whose sum is σ = 188696090. Its totient is φ = 188696088.

The previous prime is 188696077. The next prime is 188696099. The reversal of 188696089 is 980696881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164044864 + 24651225 = 12808^2 + 4965^2 .

It is an emirp because it is prime and its reverse (980696881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188696089 is a prime.

It is not a weakly prime, because it can be changed into another prime (188696029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94348044 + 94348045.

It is an arithmetic number, because the mean of its divisors is an integer number (94348045).

Almost surely, 2^188696089 is an apocalyptic number.

It is an amenable number.

188696089 is a deficient number, since it is larger than the sum of its proper divisors (1).

188696089 is an equidigital number, since it uses as much as digits as its factorization.

188696089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The square root of 188696089 is about 13736.6695017388. The cubic root of 188696089 is about 573.5715914901.

The spelling of 188696089 in words is "one hundred eighty-eight million, six hundred ninety-six thousand, eighty-nine".