2143895473 has 4 divisors (see below), whose sum is σ = 2146249728. Its totient is φ = 2141541220.

The previous prime is 2143895461. The next prime is 2143895503. The reversal of 2143895473 is 3745983412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2143895473 - 2¹⁷ = 2143764401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143893473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1175761 + ... + 1177582.

It is an arithmetic number, because the mean of its divisors is an integer number (536562432).

Almost surely, 2^2143895473 is an apocalyptic number.

It is an amenable number.

2143895473 is a deficient number, since it is larger than the sum of its proper divisors (2354255).

2143895473 is an equidigital number, since it uses as much as digits as its factorization.

2143895473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354254.

The product of its digits is 725760, while the sum is 46.

The square root of 2143895473 is about 46302.2188777169. The cubic root of 2143895473 is about 1289.4401899659.

The spelling of 2143895473 in words is "two billion, one hundred forty-three million, eight hundred ninety-five thousand, four hundred seventy-three".