188924149 has 4 divisors (see below), whose sum is σ = 188977036. Its totient is φ = 188871264.

The previous prime is 188924147. The next prime is 188924159. The reversal of 188924149 is 941429881.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127803025 + 61121124 = 11305^2 + 7818^2 .

It is a cyclic number.

It is not a de Polignac number, because 188924149 - 2¹ = 188924147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188924099 and 188924108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188924143) 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 3 ways as a sum of consecutive naturals, for example, 20664 + ... + 28369.

It is an arithmetic number, because the mean of its divisors is an integer number (47244259).

Almost surely, 2^188924149 is an apocalyptic number.

It is an amenable number.

188924149 is a deficient number, since it is larger than the sum of its proper divisors (52887).

188924149 is an equidigital number, since it uses as much as digits as its factorization.

188924149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52886.

The product of its digits is 165888, while the sum is 46.

The square root of 188924149 is about 13744.9681338299. The cubic root of 188924149 is about 573.8025732666.

The spelling of 188924149 in words is "one hundred eighty-eight million, nine hundred twenty-four thousand, one hundred forty-nine".