2143788293 has 4 divisors (see below), whose sum is σ = 2144277408. Its totient is φ = 2143299180.

The previous prime is 2143788289. The next prime is 2143788313. The reversal of 2143788293 is 3928873412.

It is a happy number.

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 2143788293 - 2² = 2143788289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143788253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237923 + ... + 246768.

It is an arithmetic number, because the mean of its divisors is an integer number (536069352).

Almost surely, 2^2143788293 is an apocalyptic number.

It is an amenable number.

2143788293 is a deficient number, since it is larger than the sum of its proper divisors (489115).

2143788293 is an equidigital number, since it uses as much as digits as its factorization.

2143788293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489114.

The product of its digits is 580608, while the sum is 47.

The square root of 2143788293 is about 46301.0614673141. The cubic root of 2143788293 is about 1289.4187018998.

The spelling of 2143788293 in words is "two billion, one hundred forty-three million, seven hundred eighty-eight thousand, two hundred ninety-three".