2143646879 has 8 divisors (see below), whose sum is σ = 2392908672. Its totient is φ = 1903449240.

The previous prime is 2143646873. The next prime is 2143646891. The reversal of 2143646879 is 9786463412.

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

It is not a de Polignac number, because 2143646879 - 2¹² = 2143642783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143646873) 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, 2265539 + ... + 2266484.

It is an arithmetic number, because the mean of its divisors is an integer number (299113584).

Almost surely, 2^2143646879 is an apocalyptic number.

2143646879 is a deficient number, since it is larger than the sum of its proper divisors (249261793).

2143646879 is a wasteful number, since it uses less digits than its factorization.

2143646879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532077.

The product of its digits is 1741824, while the sum is 50.

The square root of 2143646879 is about 46299.5343281118. The cubic root of 2143646879 is about 1289.3903493076.

The spelling of 2143646879 in words is "two billion, one hundred forty-three million, six hundred forty-six thousand, eight hundred seventy-nine".