2161443267 has 6 divisors (see below), whose sum is σ = 3122084732. Its totient is φ = 1440962172.

The previous prime is 2161443247. The next prime is 2161443269. The reversal of 2161443267 is 7623441612.

2161443267 is a `hidden beast` number, since 2 + 1 + 614 + 4 + 32 + 6 + 7 = 666.

It is not a de Polignac number, because 2161443267 - 2¹⁰ = 2161442243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2161443269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120080173 + ... + 120080190.

Almost surely, 2^2161443267 is an apocalyptic number.

2161443267 is a deficient number, since it is larger than the sum of its proper divisors (960641465).

2161443267 is a wasteful number, since it uses less digits than its factorization.

2161443267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240160369 (or 240160366 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 2161443267 is about 46491.3246423459. The cubic root of 2161443267 is about 1292.9486595930.

Adding to 2161443267 its reverse (7623441612), we get a palindrome (9784884879).

The spelling of 2161443267 in words is "two billion, one hundred sixty-one million, four hundred forty-three thousand, two hundred sixty-seven".