2146771791 has 12 divisors (see below), whose sum is σ = 3264097720. Its totient is φ = 1355855760.

The previous prime is 2146771787. The next prime is 2146771831. The reversal of 2146771791 is 1971776412.

It is not a de Polignac number, because 2146771791 - 2² = 2146771787 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 (2146771741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6276940 + ... + 6277281.

Almost surely, 2^2146771791 is an apocalyptic number.

2146771791 is a deficient number, since it is larger than the sum of its proper divisors (1117325929).

2146771791 is a wasteful number, since it uses less digits than its factorization.

2146771791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12554246 (or 12554243 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The square root of 2146771791 is about 46333.2687277727. The cubic root of 2146771791 is about 1290.0165835258.

The spelling of 2146771791 in words is "two billion, one hundred forty-six million, seven hundred seventy-one thousand, seven hundred ninety-one".