188067427393 has 4 divisors (see below), whose sum is σ = 188162749908. Its totient is φ = 187972104880.

The previous prime is 188067427357. The next prime is 188067427411. The reversal of 188067427393 is 393724760881.

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 75596402704 + 112471024689 = 274948^2 + 335367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188067427393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188067421393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47658298 + ... + 47662243.

It is an arithmetic number, because the mean of its divisors is an integer number (47040687477).

Almost surely, 2^188067427393 is an apocalyptic number.

It is an amenable number.

188067427393 is a deficient number, since it is larger than the sum of its proper divisors (95322515).

188067427393 is an equidigital number, since it uses as much as digits as its factorization.

188067427393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95322514.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 188067427393 in words is "one hundred eighty-eight billion, sixty-seven million, four hundred twenty-seven thousand, three hundred ninety-three".