2117343889 has 4 divisors (see below), whose sum is σ = 2117488356. Its totient is φ = 2117199424.

The previous prime is 2117343887. The next prime is 2117343953. The reversal of 2117343889 is 9883437112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1661948289 + 455395600 = 40767^2 + 21340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117343889 - 2¹ = 2117343887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2117343887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47404 + ... + 80509.

It is an arithmetic number, because the mean of its divisors is an integer number (529372089).

Almost surely, 2^2117343889 is an apocalyptic number.

It is an amenable number.

2117343889 is a deficient number, since it is larger than the sum of its proper divisors (144467).

2117343889 is a wasteful number, since it uses less digits than its factorization.

2117343889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144466.

The product of its digits is 290304, while the sum is 46.

The square root of 2117343889 is about 46014.6051705325. The cubic root of 2117343889 is about 1284.0949359724.

It can be divided in two parts, 211 and 7343889, that added together give a square (7344100 = 2710²).

The spelling of 2117343889 in words is "two billion, one hundred seventeen million, three hundred forty-three thousand, eight hundred eighty-nine".