188035864988689 has 9 divisors (see below), whose sum is σ = 191169804254481. Its totient is φ = 184952487067920.

The previous prime is 188035864988687. The next prime is 188035864988711. The reversal of 188035864988689 is 986889468530881.

The square root of 188035864988689 is 13712617.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3401903580625 + 184633961408064 = 1844425^2 + 13588008^2 .

It is not a de Polignac number, because 188035864988689 - 2¹ = 188035864988687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188035864988687) 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, 836357239 + ... + 836582035.

It is an arithmetic number, because the mean of its divisors is an integer number (21241089361609).

Almost surely, 2^{188035864988689} is an apocalyptic number.

188035864988689 is the 13712617-th square number.

188035864988689 is the 6856309-th centered octagonal number.

It is an amenable number.

188035864988689 is a deficient number, since it is larger than the sum of its proper divisors (3133939265792).

188035864988689 is an frugal number, since it uses more digits than its factorization.

188035864988689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449716 (or 224858 counting only the distinct ones).

The product of its (nonzero) digits is 45864714240, while the sum is 91.

The spelling of 188035864988689 in words is "one hundred eighty-eight trillion, thirty-five billion, eight hundred sixty-four million, nine hundred eighty-eight thousand, six hundred eighty-nine".