2194436659 has 2 divisors, whose sum is σ = 2194436660. Its totient is φ = 2194436658.

The previous prime is 2194436593. The next prime is 2194436677. The reversal of 2194436659 is 9566344912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2194436659 - 2²⁹ = 1657565747 is a prime.

It is not a weakly prime, because it can be changed into another prime (2194236659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097218329 + 1097218330.

It is an arithmetic number, because the mean of its divisors is an integer number (1097218330).

Almost surely, 2^2194436659 is an apocalyptic number.

2194436659 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194436659 is an equidigital number, since it uses as much as digits as its factorization.

2194436659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 49.

The square root of 2194436659 is about 46844.8146436721. The cubic root of 2194436659 is about 1299.4942132999.

The spelling of 2194436659 in words is "two billion, one hundred ninety-four million, four hundred thirty-six thousand, six hundred fifty-nine".