189865707245 has 8 divisors (see below), whose sum is σ = 228233720184. Its totient is φ = 151629318144.

The previous prime is 189865707193. The next prime is 189865707287. The reversal of 189865707245 is 542707568981.

189865707245 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 100719273769 + 89146433476 = 317363^2 + 298574^2 .

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 189865707245 - 2¹⁸ = 189865445101 is a prime.

It is a super-3 number, since 3×189865707245³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

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, 32902784 + ... + 32908553.

It is an arithmetic number, because the mean of its divisors is an integer number (28529215023).

Almost surely, 2^189865707245 is an apocalyptic number.

It is an amenable number.

189865707245 is a deficient number, since it is larger than the sum of its proper divisors (38368012939).

189865707245 is an equidigital number, since it uses as much as digits as its factorization.

189865707245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65811919.

The product of its (nonzero) digits is 33868800, while the sum is 62.

The spelling of 189865707245 in words is "one hundred eighty-nine billion, eight hundred sixty-five million, seven hundred seven thousand, two hundred forty-five".