188748142705 has 8 divisors (see below), whose sum is σ = 234308039400. Its totient is φ = 145791668736.

The previous prime is 188748142703. The next prime is 188748142813. The reversal of 188748142705 is 507241847881.

It can be written as a sum of positive squares in 4 ways, for example, as 72227637504 + 116520505201 = 268752^2 + 341351^2 .

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 188748142705 - 2¹ = 188748142703 is a prime.

It is a super-2 number, since 2×188748142705² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (188748142703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650855520 + ... + 650855809.

It is an arithmetic number, because the mean of its divisors is an integer number (29288504925).

Almost surely, 2^188748142705 is an apocalyptic number.

It is an amenable number.

188748142705 is a deficient number, since it is larger than the sum of its proper divisors (45559896695).

188748142705 is a wasteful number, since it uses less digits than its factorization.

188748142705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301711363.

The product of its (nonzero) digits is 4014080, while the sum is 55.

The spelling of 188748142705 in words is "one hundred eighty-eight billion, seven hundred forty-eight million, one hundred forty-two thousand, seven hundred five".