187275159009 has 27 divisors (see below), whose sum is σ = 274733869683. Its totient is φ = 122929548192.

The previous prime is 187275158989. The next prime is 187275159031. The reversal of 187275159009 is 900951572781.

The square root of 187275159009 is 432753.

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

187275159009 is a `hidden beast` number, since 18 + 7 + 27 + 515 + 90 + 0 + 9 = 666.

187275159009 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 only one way, i.e., 13826232225 + 173448926784 = 117585^2 + 416472^2 .

It is not a de Polignac number, because 187275159009 - 2⁷ = 187275158881 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (187275154009) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 86982277 + ... + 86984429.

Almost surely, 2^187275159009 is an apocalyptic number.

187275159009 is the 432753-rd square number.

187275159009 is the 216377-th centered octagonal number.

It is an amenable number.

187275159009 is a deficient number, since it is larger than the sum of its proper divisors (87458710674).

187275159009 is an frugal number, since it uses more digits than its factorization.

187275159009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446 (or 2223 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 54.

The spelling of 187275159009 in words is "one hundred eighty-seven billion, two hundred seventy-five million, one hundred fifty-nine thousand, nine".