188106449 has 2 divisors, whose sum is σ = 188106450. Its totient is φ = 188106448.

The previous prime is 188106433. The next prime is 188106461. The reversal of 188106449 is 944601881.

188106449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102414400 + 85692049 = 10120^2 + 9257^2 .

It is a cyclic number.

It is not a de Polignac number, because 188106449 - 2⁴ = 188106433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (188136449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94053224 + 94053225.

It is an arithmetic number, because the mean of its divisors is an integer number (94053225).

Almost surely, 2^188106449 is an apocalyptic number.

It is an amenable number.

188106449 is a deficient number, since it is larger than the sum of its proper divisors (1).

188106449 is an equidigital number, since it uses as much as digits as its factorization.

188106449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 188106449 is about 13715.1904470919. The cubic root of 188106449 is about 572.9735334536.

The spelling of 188106449 in words is "one hundred eighty-eight million, one hundred six thousand, four hundred forty-nine".