2291384291 has 4 divisors (see below), whose sum is σ = 2618724912. Its totient is φ = 1964043672.

The previous prime is 2291384257. The next prime is 2291384323. The reversal of 2291384291 is 1924831922.

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

It is a cyclic number.

It is not a de Polignac number, because 2291384291 - 2³⁰ = 1217642467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2291384231) 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, 163670300 + ... + 163670313.

It is an arithmetic number, because the mean of its divisors is an integer number (654681228).

Almost surely, 2^2291384291 is an apocalyptic number.

2291384291 is a deficient number, since it is larger than the sum of its proper divisors (327340621).

2291384291 is an equidigital number, since it uses as much as digits as its factorization.

2291384291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327340620.

The product of its digits is 62208, while the sum is 41.

The square root of 2291384291 is about 47868.4059793096. The cubic root of 2291384291 is about 1318.3558291984.

The spelling of 2291384291 in words is "two billion, two hundred ninety-one million, three hundred eighty-four thousand, two hundred ninety-one".