2642228191 has 2 divisors, whose sum is σ = 2642228192. Its totient is φ = 2642228190.

The previous prime is 2642228189. The next prime is 2642228219. The reversal of 2642228191 is 1918222462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2642228191 - 2¹ = 2642228189 is a prime.

Together with 2642228189, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2642228191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2642228101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321114095 + 1321114096.

It is an arithmetic number, because the mean of its divisors is an integer number (1321114096).

Almost surely, 2^2642228191 is an apocalyptic number.

2642228191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642228191 is an equidigital number, since it uses as much as digits as its factorization.

2642228191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 2642228191 is about 51402.6087956633. The cubic root of 2642228191 is about 1382.4733685507.

The spelling of 2642228191 in words is "two billion, six hundred forty-two million, two hundred twenty-eight thousand, one hundred ninety-one".