2144889773 has 8 divisors (see below), whose sum is σ = 2310667800. Its totient is φ = 1979224128.

The previous prime is 2144889749. The next prime is 2144889809. The reversal of 2144889773 is 3779884412.

It can be written as a sum of positive squares in 4 ways, for example, as 263672644 + 1881217129 = 16238^2 + 43373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2144889773 - 2¹⁸ = 2144627629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144889713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13883 + ... + 66951.

It is an arithmetic number, because the mean of its divisors is an integer number (288833475).

Almost surely, 2^2144889773 is an apocalyptic number.

It is an amenable number.

2144889773 is a deficient number, since it is larger than the sum of its proper divisors (165778027).

2144889773 is a wasteful number, since it uses less digits than its factorization.

2144889773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56191.

The product of its digits is 2709504, while the sum is 53.

The square root of 2144889773 is about 46312.9546995222. The cubic root of 2144889773 is about 1289.6394988477.

The spelling of 2144889773 in words is "two billion, one hundred forty-four million, eight hundred eighty-nine thousand, seven hundred seventy-three".