188065149 has 12 divisors (see below), whose sum is σ = 252179136. Its totient is φ = 124667928.

The previous prime is 188065093. The next prime is 188065177. The reversal of 188065149 is 941560881.

It is not a de Polignac number, because 188065149 - 2⁸ = 188064893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 188065149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188055149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118012 + ... + 119594.

It is an arithmetic number, because the mean of its divisors is an integer number (21014928).

Almost surely, 2^188065149 is an apocalyptic number.

It is an amenable number.

188065149 is a deficient number, since it is larger than the sum of its proper divisors (64113987).

188065149 is an equidigital number, since it uses as much as digits as its factorization.

188065149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984 (or 1785 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 188065149 is about 13713.6847346000. The cubic root of 188065149 is about 572.9315970233.

The spelling of 188065149 in words is "one hundred eighty-eight million, sixty-five thousand, one hundred forty-nine".