18055874429 has 2 divisors, whose sum is σ = 18055874430. Its totient is φ = 18055874428.

The previous prime is 18055874399. The next prime is 18055874443. The reversal of 18055874429 is 92447855081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13998439225 + 4057435204 = 118315^2 + 63698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18055874429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18055874449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9027937214 + 9027937215.

It is an arithmetic number, because the mean of its divisors is an integer number (9027937215).

Almost surely, 2^18055874429 is an apocalyptic number.

It is an amenable number.

18055874429 is a deficient number, since it is larger than the sum of its proper divisors (1).

18055874429 is an equidigital number, since it uses as much as digits as its factorization.

18055874429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 18055874429 in words is "eighteen billion, fifty-five million, eight hundred seventy-four thousand, four hundred twenty-nine".