189009737287 has 6 divisors (see below), whose sum is σ = 216012442904. Its totient is φ = 162007360320.

The previous prime is 189009737243. The next prime is 189009737299. The reversal of 189009737287 is 782737900981.

189009737287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189009737287 - 2¹⁵ = 189009704519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189009737227) 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 5 ways as a sum of consecutive naturals, for example, 1068087 + ... + 1232407.

Almost surely, 2^189009737287 is an apocalyptic number.

189009737287 is a deficient number, since it is larger than the sum of its proper divisors (27002705617).

189009737287 is an frugal number, since it uses more digits than its factorization.

189009737287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328649 (or 164328 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 189009737287 in words is "one hundred eighty-nine billion, nine million, seven hundred thirty-seven thousand, two hundred eighty-seven".