2208235891 has 2 divisors, whose sum is σ = 2208235892. Its totient is φ = 2208235890.

The previous prime is 2208235877. The next prime is 2208235901. The reversal of 2208235891 is 1985328022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2208235891 - 2¹⁷ = 2208104819 is a prime.

It is not a weakly prime, because it can be changed into another prime (2208235091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104117945 + 1104117946.

It is an arithmetic number, because the mean of its divisors is an integer number (1104117946).

Almost surely, 2^2208235891 is an apocalyptic number.

2208235891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2208235891 is an equidigital number, since it uses as much as digits as its factorization.

2208235891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 2208235891 is about 46991.8704777752. The cubic root of 2208235891 is about 1302.2123848224.

The spelling of 2208235891 in words is "two billion, two hundred eight million, two hundred thirty-five thousand, eight hundred ninety-one".