2164706187 has 16 divisors (see below), whose sum is σ = 3299373312. Its totient is φ = 1236684960.

The previous prime is 2164706183. The next prime is 2164706191. The reversal of 2164706187 is 7816074612.

It is an interprime number because it is at equal distance from previous prime (2164706183) and next prime (2164706191).

It is not a de Polignac number, because 2164706187 - 2² = 2164706183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2164706183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106833 + ... + 125469.

It is an arithmetic number, because the mean of its divisors is an integer number (206210832).

Almost surely, 2^2164706187 is an apocalyptic number.

2164706187 is a deficient number, since it is larger than the sum of its proper divisors (1134667125).

2164706187 is a wasteful number, since it uses less digits than its factorization.

2164706187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24178.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 2164706187 is about 46526.4031169400. The cubic root of 2164706187 is about 1293.5989452896.

The spelling of 2164706187 in words is "two billion, one hundred sixty-four million, seven hundred six thousand, one hundred eighty-seven".