187112531089 has 4 divisors (see below), whose sum is σ = 204122761200. Its totient is φ = 170102300980.

The previous prime is 187112530963. The next prime is 187112531167. The reversal of 187112531089 is 980135211781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 187112531089 - 2¹⁹ = 187112006801 is a prime.

It is a super-2 number, since 2×187112531089² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187110531089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8505115039 + ... + 8505115060.

It is an arithmetic number, because the mean of its divisors is an integer number (51030690300).

Almost surely, 2^187112531089 is an apocalyptic number.

It is an amenable number.

187112531089 is a deficient number, since it is larger than the sum of its proper divisors (17010230111).

187112531089 is a wasteful number, since it uses less digits than its factorization.

187112531089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17010230110.

The product of its (nonzero) digits is 120960, while the sum is 46.

It can be divided in two parts, 187112 and 531089, that added together give a triangular number (718201 = T₁₁₉₈).

The spelling of 187112531089 in words is "one hundred eighty-seven billion, one hundred twelve million, five hundred thirty-one thousand, eighty-nine".