188488980565 has 8 divisors (see below), whose sum is σ = 227174493240. Its totient is φ = 150132706752.

The previous prime is 188488980529. The next prime is 188488980571. The reversal of 188488980565 is 565089884881.

188488980565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 106394697124 + 82094283441 = 326182^2 + 286521^2 .

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 188488980565 - 2²⁷ = 188354762837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 188488980494 and 188488980503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82308454 + ... + 82310743.

It is an arithmetic number, because the mean of its divisors is an integer number (28396811655).

Almost surely, 2^188488980565 is an apocalyptic number.

It is an amenable number.

188488980565 is a deficient number, since it is larger than the sum of its proper divisors (38685512675).

188488980565 is a wasteful number, since it uses less digits than its factorization.

188488980565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164619431.

The product of its (nonzero) digits is 176947200, while the sum is 70.

The spelling of 188488980565 in words is "one hundred eighty-eight billion, four hundred eighty-eight million, nine hundred eighty thousand, five hundred sixty-five".