2194581559 has 2 divisors, whose sum is σ = 2194581560. Its totient is φ = 2194581558.

The previous prime is 2194581533. The next prime is 2194581563. The reversal of 2194581559 is 9551854912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2194581559 - 2¹⁵ = 2194548791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2194581589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097290779 + 1097290780.

It is an arithmetic number, because the mean of its divisors is an integer number (1097290780).

Almost surely, 2^2194581559 is an apocalyptic number.

2194581559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194581559 is an equidigital number, since it uses as much as digits as its factorization.

2194581559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 49.

The square root of 2194581559 is about 46846.3612140794. The cubic root of 2194581559 is about 1299.5228148040.

The spelling of 2194581559 in words is "two billion, one hundred ninety-four million, five hundred eighty-one thousand, five hundred fifty-nine".