2159775827 has 12 divisors (see below), whose sum is σ = 2375278920. Its totient is φ = 1962348960.

The previous prime is 2159775823. The next prime is 2159775853. The reversal of 2159775827 is 7285779512.

It is not a de Polignac number, because 2159775827 - 2² = 2159775823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159775823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285824 + ... + 293282.

It is an arithmetic number, because the mean of its divisors is an integer number (197939910).

Almost surely, 2^2159775827 is an apocalyptic number.

2159775827 is a deficient number, since it is larger than the sum of its proper divisors (215503093).

2159775827 is a wasteful number, since it uses less digits than its factorization.

2159775827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9874 (or 9863 counting only the distinct ones).

The product of its digits is 2469600, while the sum is 53.

The square root of 2159775827 is about 46473.3883744235. The cubic root of 2159775827 is about 1292.6160933898.

The spelling of 2159775827 in words is "two billion, one hundred fifty-nine million, seven hundred seventy-five thousand, eight hundred twenty-seven".