2117694165 has 32 divisors (see below), whose sum is σ = 3703366656. Its totient is φ = 1028705280.

The previous prime is 2117694151. The next prime is 2117694167. The reversal of 2117694165 is 5614967112.

It is not a de Polignac number, because 2117694165 - 2⁵ = 2117694133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117694167) 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 31 ways as a sum of consecutive naturals, for example, 126042 + ... + 141851.

It is an arithmetic number, because the mean of its divisors is an integer number (115730208).

Almost surely, 2^2117694165 is an apocalyptic number.

It is an amenable number.

2117694165 is a deficient number, since it is larger than the sum of its proper divisors (1585672491).

2117694165 is a wasteful number, since it uses less digits than its factorization.

2117694165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267949.

The product of its digits is 90720, while the sum is 42.

The square root of 2117694165 is about 46018.4111524942. The cubic root of 2117694165 is about 1284.1657421114.

The spelling of 2117694165 in words is "two billion, one hundred seventeen million, six hundred ninety-four thousand, one hundred sixty-five".