2109791701 has 4 divisors (see below), whose sum is σ = 2112670732. Its totient is φ = 2106912672.

The previous prime is 2109791693. The next prime is 2109791737. The reversal of 2109791701 is 1071979012.

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 1896602500 + 213189201 = 43550^2 + 14601^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109791701 - 2³ = 2109791693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109701701) 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 3 ways as a sum of consecutive naturals, for example, 1438416 + ... + 1439881.

It is an arithmetic number, because the mean of its divisors is an integer number (528167683).

Almost surely, 2^2109791701 is an apocalyptic number.

It is an amenable number.

2109791701 is a deficient number, since it is larger than the sum of its proper divisors (2879031).

2109791701 is an equidigital number, since it uses as much as digits as its factorization.

2109791701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879030.

The product of its (nonzero) digits is 7938, while the sum is 37.

The square root of 2109791701 is about 45932.4689190555. The cubic root of 2109791701 is about 1282.5664046619.

The spelling of 2109791701 in words is "two billion, one hundred nine million, seven hundred ninety-one thousand, seven hundred one".