2161383273 has 12 divisors (see below), whose sum is σ = 3567997888. Its totient is φ = 1235076120.

The previous prime is 2161383241. The next prime is 2161383277. The reversal of 2161383273 is 3723831612.

2161383273 is a `hidden beast` number, since 2 + 1 + 6 + 1 + 383 + 273 = 666.

It is not a de Polignac number, because 2161383273 - 2⁵ = 2161383241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2161383277) 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, 17153773 + ... + 17153898.

Almost surely, 2^2161383273 is an apocalyptic number.

It is an amenable number.

2161383273 is a deficient number, since it is larger than the sum of its proper divisors (1406614615).

2161383273 is a wasteful number, since it uses less digits than its factorization.

2161383273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34307684 (or 34307681 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 2161383273 is about 46490.6794207183. The cubic root of 2161383273 is about 1292.9366969258.

The spelling of 2161383273 in words is "two billion, one hundred sixty-one million, three hundred eighty-three thousand, two hundred seventy-three".