2291408213 has 4 divisors (see below), whose sum is σ = 2291588268. Its totient is φ = 2291228160.

The previous prime is 2291408167. The next prime is 2291408219. The reversal of 2291408213 is 3128041922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1160969329 + 1130438884 = 34073^2 + 33622^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291408213 - 2¹⁴ = 2291391829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2291408213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291408219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69356 + ... + 96917.

It is an arithmetic number, because the mean of its divisors is an integer number (572897067).

Almost surely, 2^2291408213 is an apocalyptic number.

It is an amenable number.

2291408213 is a deficient number, since it is larger than the sum of its proper divisors (180055).

2291408213 is a wasteful number, since it uses less digits than its factorization.

2291408213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180054.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2291408213 is about 47868.6558511935. The cubic root of 2291408213 is about 1318.3604170508.

The spelling of 2291408213 in words is "two billion, two hundred ninety-one million, four hundred eight thousand, two hundred thirteen".