2179543213 has 4 divisors (see below), whose sum is σ = 2195223520. Its totient is φ = 2163862908.

The previous prime is 2179543151. The next prime is 2179543291. The reversal of 2179543213 is 3123459712.

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 2179543213 - 2¹³ = 2179535021 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 (2179547213) 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, 7839945 + ... + 7840222.

It is an arithmetic number, because the mean of its divisors is an integer number (548805880).

Almost surely, 2^2179543213 is an apocalyptic number.

It is an amenable number.

2179543213 is a deficient number, since it is larger than the sum of its proper divisors (15680307).

2179543213 is a wasteful number, since it uses less digits than its factorization.

2179543213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15680306.

The product of its digits is 45360, while the sum is 37.

The square root of 2179543213 is about 46685.5782121203. The cubic root of 2179543213 is about 1296.5476868102.

The spelling of 2179543213 in words is "two billion, one hundred seventy-nine million, five hundred forty-three thousand, two hundred thirteen".