2272091191 has 4 divisors (see below), whose sum is σ = 2405743632. Its totient is φ = 2138438752.

The previous prime is 2272091189. The next prime is 2272091221. The reversal of 2272091191 is 1911902722.

It is a happy number.

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 2272091191 - 2¹ = 2272091189 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 (2272091131) 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, 66826195 + ... + 66826228.

It is an arithmetic number, because the mean of its divisors is an integer number (601435908).

Almost surely, 2^2272091191 is an apocalyptic number.

2272091191 is a deficient number, since it is larger than the sum of its proper divisors (133652441).

2272091191 is a wasteful number, since it uses less digits than its factorization.

2272091191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133652440.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 2272091191 is about 47666.4577139942. The cubic root of 2272091191 is about 1314.6452784061.

The spelling of 2272091191 in words is "two billion, two hundred seventy-two million, ninety-one thousand, one hundred ninety-one".