2162120679 has 12 divisors (see below), whose sum is σ = 3131577696. Its totient is φ = 1437484032.

The previous prime is 2162120677. The next prime is 2162120687. The reversal of 2162120679 is 9760212612.

2162120679 is a `hidden beast` number, since 2 + 1 + 621 + 20 + 6 + 7 + 9 = 666.

It is not a de Polignac number, because 2162120679 - 2¹ = 2162120677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162120677) 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 11 ways as a sum of consecutive naturals, for example, 323994 + ... + 330599.

It is an arithmetic number, because the mean of its divisors is an integer number (260964808).

Almost surely, 2^2162120679 is an apocalyptic number.

2162120679 is a deficient number, since it is larger than the sum of its proper divisors (969457017).

2162120679 is a wasteful number, since it uses less digits than its factorization.

2162120679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654966 (or 654963 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2162120679 is about 46498.6094308206. The cubic root of 2162120679 is about 1293.0837186477.

The spelling of 2162120679 in words is "two billion, one hundred sixty-two million, one hundred twenty thousand, six hundred seventy-nine".