2743643221 has 8 divisors (see below), whose sum is σ = 3011429664. Its totient is φ = 2478917520.

The previous prime is 2743643191. The next prime is 2743643249. The reversal of 2743643221 is 1223463472.

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 2743643221 - 2⁷ = 2743643093 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 (2743643261) 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, 763306 + ... + 766891.

It is an arithmetic number, because the mean of its divisors is an integer number (376428708).

Almost surely, 2^2743643221 is an apocalyptic number.

It is an amenable number.

2743643221 is a deficient number, since it is larger than the sum of its proper divisors (267786443).

2743643221 is a wasteful number, since it uses less digits than its factorization.

2743643221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530371.

The product of its digits is 48384, while the sum is 34.

The square root of 2743643221 is about 52379.7978327523. The cubic root of 2743643221 is about 1399.9393206694.

The spelling of 2743643221 in words is "two billion, seven hundred forty-three million, six hundred forty-three thousand, two hundred twenty-one".