188231049 has 12 divisors (see below), whose sum is σ = 272299716. Its totient is φ = 125297952.

The previous prime is 188231047. The next prime is 188231051. The reversal of 188231049 is 940132881.

It is an interprime number because it is at equal distance from previous prime (188231047) and next prime (188231051).

It can be written as a sum of positive squares in 2 ways, for example, as 146240649 + 41990400 = 12093^2 + 6480^2 .

It is not a de Polignac number, because 188231049 - 2¹ = 188231047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (188231047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9354 + ... + 21539.

It is an arithmetic number, because the mean of its divisors is an integer number (22691643).

Almost surely, 2^188231049 is an apocalyptic number.

It is an amenable number.

188231049 is a deficient number, since it is larger than the sum of its proper divisors (84068667).

188231049 is a wasteful number, since it uses less digits than its factorization.

188231049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31576 (or 31573 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 188231049 is about 13719.7321037985. The cubic root of 188231049 is about 573.1000163488.

The spelling of 188231049 in words is "one hundred eighty-eight million, two hundred thirty-one thousand, forty-nine".