188969057 has 2 divisors, whose sum is σ = 188969058. Its totient is φ = 188969056.

The previous prime is 188969023. The next prime is 188969071. The reversal of 188969057 is 750969881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184307776 + 4661281 = 13576^2 + 2159^2 .

It is an emirp because it is prime and its reverse (750969881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188969057 - 2⁶ = 188968993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (188269057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94484528 + 94484529.

It is an arithmetic number, because the mean of its divisors is an integer number (94484529).

Almost surely, 2^188969057 is an apocalyptic number.

It is an amenable number.

188969057 is a deficient number, since it is larger than the sum of its proper divisors (1).

188969057 is an equidigital number, since it uses as much as digits as its factorization.

188969057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 188969057 is about 13746.6016527722. The cubic root of 188969057 is about 573.8480346941.

The spelling of 188969057 in words is "one hundred eighty-eight million, nine hundred sixty-nine thousand, fifty-seven".