188383149 has 6 divisors (see below), whose sum is σ = 272109006. Its totient is φ = 125588760.

The previous prime is 188383141. The next prime is 188383183. The reversal of 188383149 is 941383881.

It can be written as a sum of positive squares in only one way, i.e., 183060900 + 5322249 = 13530^2 + 2307^2 .

It is not a de Polignac number, because 188383149 - 2³ = 188383141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188383141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10465722 + ... + 10465739.

It is an arithmetic number, because the mean of its divisors is an integer number (45351501).

Almost surely, 2^188383149 is an apocalyptic number.

It is an amenable number.

188383149 is a deficient number, since it is larger than the sum of its proper divisors (83725857).

188383149 is a wasteful number, since it uses less digits than its factorization.

188383149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20931467 (or 20931464 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 188383149 is about 13725.2740956237. The cubic root of 188383149 is about 573.2543391782.

The spelling of 188383149 in words is "one hundred eighty-eight million, three hundred eighty-three thousand, one hundred forty-nine".