188930503808 has 72 divisors (see below), whose sum is σ = 381096387945. Its totient is φ = 93297314304.

The previous prime is 188930503807. The next prime is 188930503823. The reversal of 188930503808 is 808305039881.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 188571325504 + 359178304 = 434248^2 + 18952^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=307352.

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 188930503808.

It is not an unprimeable number, because it can be changed into a prime (188930503807) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 506515910 + ... + 506516282.

Almost surely, 2^188930503808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188930503808

188930503808 is an abundant number, since it is smaller than the sum of its proper divisors (192165884137).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

188930503808 is an frugal number, since it uses more digits than its factorization.

188930503808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 188930503808 in words is "one hundred eighty-eight billion, nine hundred thirty million, five hundred three thousand, eight hundred eight".