2971644673 has 4 divisors (see below), whose sum is σ = 2975489748. Its totient is φ = 2967799600.

The previous prime is 2971644671. The next prime is 2971644737. The reversal of 2971644673 is 3764461792.

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 616677889 + 2354966784 = 24833^2 + 48528^2 .

It is a cyclic number.

It is not a de Polignac number, because 2971644673 - 2¹ = 2971644671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2971644671) 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, 1921378 + ... + 1922923.

It is an arithmetic number, because the mean of its divisors is an integer number (743872437).

Almost surely, 2^2971644673 is an apocalyptic number.

It is an amenable number.

2971644673 is a deficient number, since it is larger than the sum of its proper divisors (3845075).

2971644673 is an equidigital number, since it uses as much as digits as its factorization.

2971644673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845074.

The product of its digits is 1524096, while the sum is 49.

The square root of 2971644673 is about 54512.7936635062. The cubic root of 2971644673 is about 1437.6912387589.

The spelling of 2971644673 in words is "two billion, nine hundred seventy-one million, six hundred forty-four thousand, six hundred seventy-three".