2162520709 has 4 divisors (see below), whose sum is σ = 2168413504. Its totient is φ = 2156627916.

The previous prime is 2162520677. The next prime is 2162520719. The reversal of 2162520709 is 9070252612.

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.

It is a cyclic number.

It is not a de Polignac number, because 2162520709 - 2⁵ = 2162520677 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 (2162520719) 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 3 ways as a sum of consecutive naturals, for example, 2945847 + ... + 2946580.

It is an arithmetic number, because the mean of its divisors is an integer number (542103376).

Almost surely, 2^2162520709 is an apocalyptic number.

It is an amenable number.

2162520709 is a deficient number, since it is larger than the sum of its proper divisors (5892795).

2162520709 is an equidigital number, since it uses as much as digits as its factorization.

2162520709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892794.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2162520709 is about 46502.9107583601. The cubic root of 2162520709 is about 1293.1634614032.

The spelling of 2162520709 in words is "two billion, one hundred sixty-two million, five hundred twenty thousand, seven hundred nine".