2271891383 has 4 divisors (see below), whose sum is σ = 2272051080. Its totient is φ = 2271731688.

The previous prime is 2271891379. The next prime is 2271891421. The reversal of 2271891383 is 3831981722.

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 2271891383 - 2² = 2271891379 is a prime.

It is a super-2 number, since 2×2271891383² = 10322980912299305378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271891343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56168 + ... + 87741.

It is an arithmetic number, because the mean of its divisors is an integer number (568012770).

Almost surely, 2^2271891383 is an apocalyptic number.

2271891383 is a deficient number, since it is larger than the sum of its proper divisors (159697).

2271891383 is a wasteful number, since it uses less digits than its factorization.

2271891383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159696.

The product of its digits is 145152, while the sum is 44.

The square root of 2271891383 is about 47664.3617706143. The cubic root of 2271891383 is about 1314.6067405832.

The spelling of 2271891383 in words is "two billion, two hundred seventy-one million, eight hundred ninety-one thousand, three hundred eighty-three".