2162811959 has 12 divisors (see below), whose sum is σ = 2716921872. Its totient is φ = 1685307360.

The previous prime is 2162811947. The next prime is 2162811991. The reversal of 2162811959 is 9591182612.

It is not a de Polignac number, because 2162811959 - 2¹² = 2162807863 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162811559) 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, 1275902 + ... + 1277595.

It is an arithmetic number, because the mean of its divisors is an integer number (226410156).

Almost surely, 2^2162811959 is an apocalyptic number.

2162811959 is a deficient number, since it is larger than the sum of its proper divisors (554109913).

2162811959 is a wasteful number, since it uses less digits than its factorization.

2162811959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553526 (or 2553515 counting only the distinct ones).

The product of its digits is 77760, while the sum is 44.

The square root of 2162811959 is about 46506.0421773343. The cubic root of 2162811959 is about 1293.2215135564.

The spelling of 2162811959 in words is "two billion, one hundred sixty-two million, eight hundred eleven thousand, nine hundred fifty-nine".