2159852985 has 64 divisors (see below), whose sum is σ = 3980697600. Its totient is φ = 1110226176.

The previous prime is 2159852951. The next prime is 2159853011. The reversal of 2159852985 is 5892589512.

2159852985 is a `hidden beast` number, since 21 + 5 + 98 + 529 + 8 + 5 = 666.

It is not a de Polignac number, because 2159852985 - 2⁶ = 2159852921 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 542472 + ... + 546438.

It is an arithmetic number, because the mean of its divisors is an integer number (62198400).

Almost surely, 2^2159852985 is an apocalyptic number.

It is an amenable number.

2159852985 is a deficient number, since it is larger than the sum of its proper divisors (1820844615).

2159852985 is a wasteful number, since it uses less digits than its factorization.

2159852985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127 (or 4121 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 54.

The square root of 2159852985 is about 46474.2184980017. The cubic root of 2159852985 is about 1292.6314861115.

The spelling of 2159852985 in words is "two billion, one hundred fifty-nine million, eight hundred fifty-two thousand, nine hundred eighty-five".