2049791671 has 16 divisors (see below), whose sum is σ = 2160126144. Its totient is φ = 1941305344.

The previous prime is 2049791669. The next prime is 2049791699. The reversal of 2049791671 is 1761979402.

It is not a de Polignac number, because 2049791671 - 2¹ = 2049791669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049791621) 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, 1867995 + ... + 1869091.

It is an arithmetic number, because the mean of its divisors is an integer number (135007884).

Almost surely, 2^2049791671 is an apocalyptic number.

2049791671 is a deficient number, since it is larger than the sum of its proper divisors (110334473).

2049791671 is a wasteful number, since it uses less digits than its factorization.

2049791671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 2049791671 is about 45274.6250232953. The cubic root of 2049791671 is about 1270.2910592121.

The spelling of 2049791671 in words is "two billion, forty-nine million, seven hundred ninety-one thousand, six hundred seventy-one".