188446897 has 2 divisors, whose sum is σ = 188446898. Its totient is φ = 188446896.

The previous prime is 188446877. The next prime is 188446913. The reversal of 188446897 is 798644881.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177662241 + 10784656 = 13329^2 + 3284^2 .

It is an emirp because it is prime and its reverse (798644881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188446897 - 2¹¹ = 188444849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (188446877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94223448 + 94223449.

It is an arithmetic number, because the mean of its divisors is an integer number (94223449).

Almost surely, 2^188446897 is an apocalyptic number.

It is an amenable number.

188446897 is a deficient number, since it is larger than the sum of its proper divisors (1).

188446897 is an equidigital number, since it uses as much as digits as its factorization.

188446897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 55.

The square root of 188446897 is about 13727.5961843288. The cubic root of 188446897 is about 573.3189941053.

The spelling of 188446897 in words is "one hundred eighty-eight million, four hundred forty-six thousand, eight hundred ninety-seven".