2171007613 has 4 divisors (see below), whose sum is σ = 2171128608. Its totient is φ = 2170886620.

The previous prime is 2171007547. The next prime is 2171007647. The reversal of 2171007613 is 3167001712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2171007613 - 2⁹ = 2171007101 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 (2171007653) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27631 + ... + 71452.

It is an arithmetic number, because the mean of its divisors is an integer number (542782152).

Almost surely, 2^2171007613 is an apocalyptic number.

It is an amenable number.

2171007613 is a deficient number, since it is larger than the sum of its proper divisors (120995).

2171007613 is an equidigital number, since it uses as much as digits as its factorization.

2171007613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120994.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 2171007613 is about 46594.0727238991. The cubic root of 2171007613 is about 1294.8529447462.

The spelling of 2171007613 in words is "two billion, one hundred seventy-one million, seven thousand, six hundred thirteen".