2185063887 has 16 divisors (see below), whose sum is σ = 2998144512. Its totient is φ = 1414820160.

The previous prime is 2185063817. The next prime is 2185063901. The reversal of 2185063887 is 7883605812.

It is not a de Polignac number, because 2185063887 - 2⁷ = 2185063759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185063817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40678 + ... + 77619.

It is an arithmetic number, because the mean of its divisors is an integer number (187384032).

Almost surely, 2^2185063887 is an apocalyptic number.

2185063887 is a deficient number, since it is larger than the sum of its proper divisors (813080625).

2185063887 is a wasteful number, since it uses less digits than its factorization.

2185063887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118478.

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 2185063887 is about 46744.6669364538. Note that the first 3 decimals coincide. The cubic root of 2185063887 is about 1297.6414606626.

The spelling of 2185063887 in words is "two billion, one hundred eighty-five million, sixty-three thousand, eight hundred eighty-seven".