188664323 has 4 divisors (see below), whose sum is σ = 188733528. Its totient is φ = 188595120.

The previous prime is 188664299. The next prime is 188664347. The reversal of 188664323 is 323466881.

It is a happy number.

188664323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (188664299) and next prime (188664347).

It is a cyclic number.

It is not a de Polignac number, because 188664323 - 2¹⁴ = 188647939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188664353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30338 + ... + 36023.

It is an arithmetic number, because the mean of its divisors is an integer number (47183382).

Almost surely, 2^188664323 is an apocalyptic number.

188664323 is a deficient number, since it is larger than the sum of its proper divisors (69205).

188664323 is an equidigital number, since it uses as much as digits as its factorization.

188664323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69204.

The product of its digits is 165888, while the sum is 41.

The square root of 188664323 is about 13735.5132048278. The cubic root of 188664323 is about 573.5394037576.

The spelling of 188664323 in words is "one hundred eighty-eight million, six hundred sixty-four thousand, three hundred twenty-three".