2161444295 has 4 divisors (see below), whose sum is σ = 2593733160. Its totient is φ = 1729155432.

The previous prime is 2161444283. The next prime is 2161444303. The reversal of 2161444295 is 5924441612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2161444295 - 2²⁸ = 1893008839 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 216144425 + ... + 216144434.

It is an arithmetic number, because the mean of its divisors is an integer number (648433290).

Almost surely, 2^2161444295 is an apocalyptic number.

2161444295 is a deficient number, since it is larger than the sum of its proper divisors (432288865).

2161444295 is an equidigital number, since it uses as much as digits as its factorization.

2161444295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432288864.

The product of its digits is 69120, while the sum is 38.

The square root of 2161444295 is about 46491.3356981707. The cubic root of 2161444295 is about 1292.9488645719.

The spelling of 2161444295 in words is "two billion, one hundred sixty-one million, four hundred forty-four thousand, two hundred ninety-five".