2643738071 has 16 divisors (see below), whose sum is σ = 3008960640. Its totient is φ = 2302668000.

The previous prime is 2643738067. The next prime is 2643738091. The reversal of 2643738071 is 1708373462.

It is a cyclic number.

It is not a de Polignac number, because 2643738071 - 2² = 2643738067 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643738011) 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 15 ways as a sum of consecutive naturals, for example, 40676 + ... + 83318.

It is an arithmetic number, because the mean of its divisors is an integer number (188060040).

Almost surely, 2^2643738071 is an apocalyptic number.

2643738071 is a deficient number, since it is larger than the sum of its proper divisors (365222569).

2643738071 is a wasteful number, since it uses less digits than its factorization.

2643738071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42926.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 2643738071 is about 51417.2935013114. The cubic root of 2643738071 is about 1382.7366528271.

The spelling of 2643738071 in words is "two billion, six hundred forty-three million, seven hundred thirty-eight thousand, seventy-one".