188539201 has 4 divisors (see below), whose sum is σ = 188640900. Its totient is φ = 188437504.

The previous prime is 188539187. The next prime is 188539207. The reversal of 188539201 is 102935881.

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 58920976 + 129618225 = 7676^2 + 11385^2 .

It is a cyclic number.

It is not a de Polignac number, because 188539201 - 2¹³ = 188531009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188539207) 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, 48016 + ... + 51793.

It is an arithmetic number, because the mean of its divisors is an integer number (47160225).

Almost surely, 2^188539201 is an apocalyptic number.

It is an amenable number.

188539201 is a deficient number, since it is larger than the sum of its proper divisors (101699).

188539201 is an equidigital number, since it uses as much as digits as its factorization.

188539201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101698.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 188539201 is about 13730.9577597486. The cubic root of 188539201 is about 573.4125854554.

The spelling of 188539201 in words is "one hundred eighty-eight million, five hundred thirty-nine thousand, two hundred one".