188428588013 has 8 divisors (see below), whose sum is σ = 199685681208. Its totient is φ = 177190723584.

The previous prime is 188428587953. The next prime is 188428588021. The reversal of 188428588013 is 310885824881.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 127754060329 + 60674527684 = 357427^2 + 246322^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 188428588013 - 2¹⁰ = 188428586989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 188428588013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188428588043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4787006 + ... + 4826207.

It is an arithmetic number, because the mean of its divisors is an integer number (24960710151).

Almost surely, 2^188428588013 is an apocalyptic number.

It is an amenable number.

188428588013 is a deficient number, since it is larger than the sum of its proper divisors (11257093195).

188428588013 is a wasteful number, since it uses less digits than its factorization.

188428588013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9614383.

The product of its (nonzero) digits is 3932160, while the sum is 56.

The spelling of 188428588013 in words is "one hundred eighty-eight billion, four hundred twenty-eight million, five hundred eighty-eight thousand, thirteen".