2071273709 has 4 divisors (see below), whose sum is σ = 2071376604. Its totient is φ = 2071170816.

The previous prime is 2071273697. The next prime is 2071273739. The reversal of 2071273709 is 9073721702.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9073721702 = 2 ⋅4536860851.

It can be written as a sum of positive squares in 2 ways, for example, as 1113556900 + 957716809 = 33370^2 + 30947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2071273709 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 (2071273739) 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, 10262 + ... + 65175.

It is an arithmetic number, because the mean of its divisors is an integer number (517844151).

Almost surely, 2^2071273709 is an apocalyptic number.

It is an amenable number.

2071273709 is a deficient number, since it is larger than the sum of its proper divisors (102895).

2071273709 is an equidigital number, since it uses as much as digits as its factorization.

2071273709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102894.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 2071273709 is about 45511.2481591090. The cubic root of 2071273709 is about 1274.7132424953.

The spelling of 2071273709 in words is "two billion, seventy-one million, two hundred seventy-three thousand, seven hundred nine".