1842222091 has 2 divisors, whose sum is σ = 1842222092. Its totient is φ = 1842222090.

The previous prime is 1842222079. The next prime is 1842222097. The reversal of 1842222091 is 1902222481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1842222091 - 2⁵ = 1842222059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1842222097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921111045 + 921111046.

It is an arithmetic number, because the mean of its divisors is an integer number (921111046).

Almost surely, 2^1842222091 is an apocalyptic number.

1842222091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1842222091 is an equidigital number, since it uses as much as digits as its factorization.

1842222091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1842222091 is about 42921.1147455422. The cubic root of 1842222091 is about 1225.8782187227.

The spelling of 1842222091 in words is "one billion, eight hundred forty-two million, two hundred twenty-two thousand, ninety-one".